chemical
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B1 noun /ˈkɛmɪkəl/

chemical

sustancia química
Meaning
a substance produced by or used in a chemical process
Example
The factory releases harmful chemicals into the river.
La fábrica libera sustancias químicas dañinas en el río.
B1 noun /flæʃ/

Flash

destello; resplandor
Meaning
a sudden brief burst of bright light; a very brief moment
Example
There was a bright flash of lightning followed by thunder.
Hubo un destello brillante de relámpago seguido de un trueno.
B1 adverb /ˈkɑːm.li/

Calmly

tranquilamente
Meaning
in a peaceful way without showing strong emotions; quietly and without excitement
Example
She spoke calmly despite being angry.
Ella habló tranquilamente a pesar de estar enojada.
B1 noun /ədˈvaɪzər/

adviser

asesor
Meaning
a person who gives advice, especially in a professional or official role
Example
He works as a financial adviser at a bank.
Él trabaja como asesor financiero en un banco.
B1 noun /ˈvɪk.tɪm/

Victim

víctima
Meaning
a person who suffers harm, injury, or death as a result of an event or action
Example
The victim was taken to the hospital immediately.
La víctima fue llevada al hospital inmediatamente.
B1 noun sɪˈkjʊə.rɪ.ti

security

seguridad
Meaning
The state of being free from danger, threat, or loss.
Example
Food security is essential for human survival.
La seguridad alimentaria es esencial para la supervivencia humana.
B1 noun /ˈpʌn.ɪʃ.mənt/

Punishment

castigo
Meaning
penalty given for doing something wrong or breaking a rule
Example
The student received punishment for cheating on the exam.
El estudiante recibió un castigo por hacer trampa en el examen.
B1 noun ˌɪndɪˈpendəns

independence

independencia
Meaning
The fact or state of being independent; freedom from outside control; not being subject to another's authority.
Example
Independence inspired the movement.
La independencia inspiró el movimiento.
B1 noun /ˈlaɪf.staɪl/

lifestyle

estilo de vida
Meaning
The way in which a person or group lives, including habits, attitudes, and possessions.
Example
A healthy lifestyle includes regular exercise and a balanced diet.
Un estilo de vida saludable incluye ejercicio regular y una dieta equilibrada.
B1 adjective /ˈʌpˌkʌmɪŋ/

upcoming

próximo
Meaning
about to happen or appear
Example
The upcoming event will be held next week.
El próximo evento se llevará a cabo la próxima semana.
B1 noun /ˈdaɪ.mənd/

Diamond

diamante
Meaning
a precious stone that is extremely hard and brilliant when cut
Example
She wore a diamond ring on her finger.
Ella llevó un anillo de diamante en su dedo.
B1 adjective /ˈɔːɡənaɪzd/

organized

organizado
Meaning
Arranged in a systematic way, especially on a large scale.
Example
An organized approach to work increases productivity and reduces stress.
Un enfoque organizado para el trabajo aumenta la productividad y reduce el estrés.
B1 adjective /ˈfriːkwənt/

Frequent

frecuente
Meaning
happening often; occurring regularly; repeated
Example
He makes frequent visits to his grandmother.
él hace visitas frecuentes a su abuela.
B1 noun, verb /stɒk/

stock

inventario
Meaning
a supply of goods kept for sale or use; to keep or fill with goods
Example
The shop stocks a wide variety of products.
La tienda tiene una amplia variedad de productos.
B1 noun /fɔːlt/

Fault

culpa; error; defecto
Meaning
an unattractive or unsatisfactory feature; responsibility for an accident or misfortune
Example
The accident was caused by a fault in the car's braking system.
El accidente fue causado por un fallo en el sistema de frenos del coche.
B1 verb kənˈsjuːmz

consumes

consumir
Meaning
Use up (a resource); eat, drink, or ingest (food or drink).
Example
An individual consumes around 20 kg of plastic annually.
Una persona consume alrededor de 20 kg de plástico anualmente.
B1 noun /kæmˈpeɪn/

Campaign

campaña
Meaning
an organized course of action to achieve a particular goal; a series of military operations
Example
The environmental campaign successfully raised awareness about climate change.
La campaña ambiental recaudó exitosamente conciencia sobre el cambio climático.
B1 verb /trænsˈleɪt/

translate

traducir
Meaning
to express words or text in another language
Example
She can translate five languages.
Ella puede traducir cinco idiomas.
B1 noun /rɪˈkʌvəri/

recovery

recuperación
Meaning
the process of recovering or returning to a normal state
Example
The patient is in recovery after the surgery.
El paciente está en recuperación después de la cirugía.
B1 verb /əˈpruːv/

approve

aprobar
Meaning
to officially agree to or accept something; to give permission
Example
The committee will approve the new policy tomorrow.
La comisión aprobará la nueva política mañana.
B1 verb /rɪˈviːl/

reveal

revelar
Meaning
to make known or show something that was hidden
Example
The investigation revealed the truth.
La investigación reveló la verdad.
B1 adverb /əˈkeɪʒənəli/

Occasionally

ocasionalmente; de vez en cuando;
Meaning
sometimes; from time to time; not regularly
Example
I occasionally visit my grandmother on weekends.
A veces visito a mi abuela los fines de semana.
B1 verb /ˌɪntəˈrʌpt/

interrupt

interrumpir
Meaning
to stop someone from speaking or doing something by suddenly saying or doing something
Example
She tried not to interrupt while he was speaking.
Ella intentó no interrumpir mientras él hablaba.
B1 noun /ʃɒk/

shock

shock
Meaning
a sudden upsetting or surprising event or experience
Example
The news of his sudden departure was a shock to everyone.
La noticia de su repentina partida fue un shock para todos.
B1 noun /lenz/

lens

lente
Meaning
a curved piece of glass or plastic that makes things look clearer or larger when you look through it
Example
He cleaned the camera lens before taking the picture.
Él limpió la lente de la cámara antes de tomar la foto.
B1 noun /ˈbæɡɪdʒ/

Baggage

equipaje; pertenencias personales;
Meaning
suitcases and bags containing personal belongings; past experiences or problems that affect behavior
Example
Please collect your baggage from the conveyor belt at the airport.
Por favor, recoja su equipaje en la cinta transportadora en el aeropuerto.
B1 noun/verb /ˈdɒkjʊmənt/

document

documento
Meaning
Noun: A written, printed, or electronic record that provides information or evidence. Verb: To record information in written or electronic form.
Example
She carefully documented all the expenses of the trip.
Ella documentó cuidadosamente todos los gastos del viaje.
B1 noun /ˈsɪtɪzənʃɪp/

citizenship

ciudadanía
Meaning
the status of being a recognized member of a state or country, with rights and duties
Example
He applied for American citizenship after living there for ten years.
Solicitó la ciudadanía estadounidense después de vivir allí durante diez años.
B1 verb /əˈdɒpt/

adopt

adoptar
Meaning
To take something as your own, such as a child, idea, or method.
Example
They decided to adopt a child from the orphanage.
Decidieron adoptar un niño del orfanato.
B1 noun /læm/

Lamb

cordero
Meaning
a young sheep; meat from a young sheep
Example
The little lamb followed its mother everywhere.
El pequeño cordero siguió a su madre por todas partes.
B1 noun ˈpeɪʃəns

patience

paciencia
Meaning
The capacity to accept or tolerate delay, problems, or suffering without becoming annoyed or anxious
Example
Patience is essential when chasing big goals.
La paciencia es esencial cuando se persiguen grandes metas.
B1 noun /feɪm/

Fame

fama
Meaning
the condition of being known or talked about by many people
Example
The young actor achieved international fame with his latest movie.
El joven actor alcanzó fama internacional con su última película.
B1 noun /lɪd/

Lid

tapa
Meaning
a removable or hinged cover for the top of a container
Example
Please put the lid back on the jar.
Por favor, ponga la tapa de vuelta en el tarro.
B1 verb /kæst/

cast

lanzar
Meaning
to throw; to choose actors for a play; to shape metal
Example
The fisherman casts his line into the water.
El pescador lanza su línea al agua.
B1 noun /ˈkemɪst/

chemist

químico; farmacéutico
Meaning
a scientist who studies chemistry; a person trained to prepare and dispense medicines
Example
The chemist analyzed the sample to determine its composition.
El químico analizó la muestra para determinar su composición.
B1 noun /dʒiːp/

jeep

jeep
Meaning
a sturdy motor vehicle designed for rough terrain; a small military or civilian off-road vehicle
Example
The jeep climbed the rocky hill without difficulty.
El jeep subió la colina rocosa sin dificultad.
B1 verb /skriːm/

scream

gritar
Meaning
to make a loud, high-pitched sound, usually because of fear, pain, or excitement
Example
She screamed when she saw the spider.
Ella gritó cuando vio la araña.
B1 verb /ˈkæri aʊt/

carry out

realizar
Meaning
to perform or complete a task; to execute a plan
Example
The team carries out the project successfully.
El equipo lleva a cabo el proyecto exitosamente.
B1 noun /ɪɡˌzæm.ɪˈneɪ.ʃən/

examination

examen
Meaning
a formal test of knowledge or ability
Example
She is preparing for her final examination.
Ella está preparándose para su examen final.
B1 verb /fərˈbɪd/

forbid

prohibir
Meaning
to order someone not to do something
Example
The school forbids smoking on campus.
La escuela prohíbe fumar en el campus.
B1 noun ɡreɪt wɔːl əv ˈtʃaɪ.nə

Great Wall of China

Gran Muralla China
Meaning
A massive ancient fortification system in China, built to protect against invasions and considered one of the most famous landmarks in the world.
Example
The Great Wall of China is one of the most famous landmarks in the world.
La Gran Muralla de China es uno de los monumentos más famosos del mundo.
B1 noun /əˌkɒm.əˈdeɪ.ʃənz/

accommodations

alojamiento
Meaning
Lodging; room and board; places to stay.
Example
The students had proper accommodations.
Los estudiantes tenían alojamiento adecuado.
B1 noun /əˈpruː.vəl/

approval

aprobación
Meaning
official permission or agreement for something
Example
The project received government approval.
El proyecto recibió la aprobación del gobierno.
B1 adjective, preposition, noun /mɪd/

mid

medio
Meaning
being in the middle of something; the central part or point
Example
She joined the project in mid June.
Ella se unió al proyecto a mediados de junio.
B1 noun, adjective /pəˈdɛstriən/

Pedestrian

peatón
Meaning
a person walking on the street; also means dull or ordinary
Example
The pedestrian crossed the road at the crosswalk.
El peatón cruzó la calle por el paso de cebra.
B1 adverb /pɑːrˈtɪkjʊləli/

particularly

particularmente
Meaning
to a higher degree than is usual or expected
Example
She is particularly fond of Italian food.
Ella es particularmente aficionada a la comida italiana.
B1 adjective /ˈeɪn.ʃənt/

Ancient

antiguo
Meaning
belonging to the very distant past; very old; historical
Example
We visited the ancient ruins of the Roman empire.
Visitamos las antiguas ruinas del Imperio Romano.
B1 verb ɪnˈspaɪər

inspire

inspirar
Meaning
To fill someone with the urge or ability to do or feel something, especially creative or noble.
Example
Artemis seeks to inspire future generations.
Artemis busca inspirar a las generaciones futuras.
B1 noun /ˈkɔːrɪdɔːr/

corridor

un largo pasillo que conecta con varias habitaciones
Meaning
a long passage in a building from which doors lead into rooms
Example
The students waited quietly in the corridor.
Los estudiantes esperaban tranquilamente en el corredor.
B1 adjective /əˈmjuː.zɪŋ/

Amusing

divertido; gracioso; entretenido
Meaning
causing laughter or providing entertainment; funny; enjoyable
Example
The children found the clown's performance very amusing.
Los niños encontraron la actuación del payaso muy divertida.
B1 noun /rɪˈspɒns/

Response

respuesta; reacción
Meaning
a reaction to something; an answer or reply; the way in which something reacts to external stimulus
Example
The government's response to the crisis was swift and decisive.
La respuesta del gobierno a la crisis fue rápida y decisiva.
B1 adjective /əˈkeɪ.ʒən.əl/

Occasional

ocasional
Meaning
occurring infrequently or irregularly; happening from time to time
Example
She enjoys occasional walks in the park.
Ella disfruta de paseos ocasionales en el parque.
B1 noun /ˈeɪ.dʒənt/

agent

agente
Meaning
A person who acts on behalf of another person or organization.
Example
The real estate agent showed us several houses.
El agente inmobiliario nos mostró varias casas.
B1 noun ˈtʊə.rɪ.zəm

tourism

turismo
Meaning
The commercial organization and operation of vacations and visits to places of interest.
Example
Tourism drives economic growth in many countries.
El turismo impulsa el crecimiento económico en muchos países.
B1 noun /ˈhaʊshoʊld/

household

hogar
Meaning
All the people living together in one house, considered as a unit.
Example
There are five people in our household.
Hay cinco personas en nuestro hogar.
B1 noun æmˈbɪʃ.ən

ambition

ambición
Meaning
A strong desire to do or achieve something, typically requiring determination and hard work.
Example
Their ambition is to build a quantum computer.
Su ambición es construir una computadora cuántica.
B1 noun /ˈɡroʊ.sər/

Grocer

tiendero
Meaning
a person who sells food and household goods in a shop
Example
The grocer has fresh vegetables and fruits in his store.
El tiendero tiene frutas y verduras frescas en su tienda.
B1 noun /tiːn/

teen

adolescente
Meaning
a person aged between 13 and 19 years.
Example
He's a teenager who loves sports.
Él es un adolescente que ama los deportes.
B1 noun /ˈpɔːtrət/

portrait

retrato
Meaning
a painting, drawing, photograph, or engraving of a person, especially one showing the face
Example
The artist painted a beautiful portrait of his wife.
El artista pintó un hermoso retrato de su esposa.
B1 adjective, verb /əˈproʊpriət/ (adj), /əˈproʊprieɪt/ (verb)

appropriate

apropiado / apropiarse de
Meaning
suitable or proper in the circumstances (adj); to take something for one’s own use, often without permission (verb)
Example
Wearing formal clothes was appropriate for the ceremony.
Usar ropa formal fue apropiado para la ceremonia.
B1 noun /ˈsæl.ər.i/

Salary

salario
Meaning
a fixed regular payment, typically paid on a monthly basis
Example
She receives a good salary for her work as a teacher.
Ella recibe un buen salario por su trabajo como profesora.
B1 verb /prəˈvaɪdɪd/

provided

proporcionado
Meaning
gave or supplied something that was needed
Example
The hotel provided free breakfast for all guests.
El hotel proporcionó desayuno gratuito para todos los huéspedes.
B1 adjective /ˌwel bɪˈheɪvd/

Well-behaved

bien educado
Meaning
conducting oneself in a proper and polite manner; showing good manners
Example
The children were well-behaved during the ceremony.
Los niños se comportaron bien durante la ceremonia.
B1 noun /ˈpeɪvmənt/

pavement

acera
Meaning
a hard paved surface such as a road or sidewalk; the act or result of paving
Example
She walked along the pavement to reach the bus stop.
Ella caminó por la acera para llegar a la parada del autobús.
B1 noun /ˈjuːnjən/

Union

unión
Meaning
the action of joining or combining; a political unit formed from separate states
Example
The union of the two companies created a powerful corporation.
La unión de las dos empresas creó una poderosa corporación.
B1 adjective /ʌnˈjuzd/

Unused

sin usar; no utilizado
Meaning
not being used; not having been used before
Example
There are many unused rooms in this old mansion.
Hay muchas habitaciones sin usar en esta antigua mansión.
B1 noun /ˈniː.dəl/

Needle

aguja
Meaning
a thin, pointed metal instrument used for sewing
Example
She threaded the needle to sew the button.
Ella enhebró la aguja para coser el botón.
B1 noun /kənˈvɛnʃən/

convention

convención
Meaning
a widely accepted way of behaving or doing something; a formal meeting
Example
The annual writers' convention was held in Dhaka.
La convención anual de escritores se celebró en Dhaka.
B1 noun ˈsɛʃənz

sessions

sesiones, reuniones, período
Meaning
A meeting of an official body, especially a court of law, to conduct its business; a period devoted to a particular activity.
Example
The sessions lasted for three hours.
Las sesiones duraron tres horas.
B1 noun /neɪl/

Nail

clavo
Meaning
a small metal spike with a broadened flat head; part of finger or toe
Example
He hammered the nail into the wooden board.
Clavó el clavo en la tabla de madera.
B1 adjective /brɔːd/

Broad

ancho; extenso; que cubre una gran área
Meaning
wide; extensive; covering a large area
Example
The river is very broad at this point.
El río es muy ancho en este punto.
B1 noun hoʊm əˈplaɪ.ənsɪz

home appliances

electrodomésticos
Meaning
Electrical devices and machines used in households for daily tasks and convenience.
Example
Modern home appliances enhance convenience.
Los electrodomésticos modernos mejoran la comodidad.
B1 noun /bend/

Bend

curva; giro
Meaning
a curved or angled part of something; a turning point in a road or river
Example
There is a sharp bend in the river ahead.
Hay una curva pronunciada en el río adelante.
B1 noun /ruːt/

Root

raíz; origen; base; causa
Meaning
the part of a plant that grows underground; the basic cause, source, or origin of something
Example
We need to find the root of this problem to solve it permanently.
Necesitamos encontrar la raíz de este problema para resolverlo permanentemente.
B1 adverb /ˈkʌrəntli/

currently

actualmente
Meaning
at the present time; now
Example
He is currently working on a new project.
Él está actualmente trabajando en un nuevo proyecto.
B1 noun, adjective, gerund /ˈæk.tɪŋ/

acting

actuación
Meaning
the art or profession of performing in plays, films, or television; temporary performance of duties; the process of performing an action
Example
She is studying acting to become a professional actress.
Ella estudia actuación para ser actriz profesional.
B1 noun /sɔɪl/

soil

suelo
Meaning
The upper layer of earth in which plants grow.
Example
The soil in this area is reddish.
El suelo en esta área es rojizo.
B1 noun/verb /ˈmætərz/

matters

asuntos / importar
Meaning
important topics, concerns, or issues; as a verb, to be of importance or significance
Example
What she thinks really matters to me.
Lo que ella piensa realmente importa para mí.
B1 verb /əˈdʒʌst/

adjust

ajustar
Meaning
to change something slightly to make it more suitable or effective
Example
She adjusted the mirror to see the road clearly.
Ella ajustó el espejo para ver la carretera claramente.
B1 adjective ˈkruː.ʃəl

crucial

crucial
Meaning
Decisive or critical, especially in the success or failure of something.
Example
Fault-tolerance is crucial for reliability.
La tolerancia a fallos es crucial para la fiabilidad.
B1 verb, noun, adjective /ˈmeltɪŋ/

melting

derretimiento
Meaning
the process of changing from solid to liquid due to heat; becoming softer or less rigid; emotionally moving or tender
Example
The ice is melting quickly under the hot sun.
El hielo se está derritiendo rápidamente bajo el sol caliente.
B1 verb /sərˈvaɪv/

survive

sobrevivir
Meaning
To continue to live or exist after a difficult event or situation.
Example
He managed to survive the storm.
Él logró sobrevivir la tormenta.
B1 verb /dɪˈzɜːrv/

deserve

merecer
Meaning
To be worthy of something, usually a reward or punishment.
Example
She worked hard and deserves recognition.
Ella trabajó duro y merece reconocimiento.
B1 verb /rɪˈper/

repair

reparar
Meaning
to fix something that is broken or damaged
Example
The mechanic will repair the car's engine tomorrow.
El mecánico reparará el motor del coche mañana.
B1 noun, verb /ʃeɪd/

shade

sombra
Meaning
a sheltered or darker area where direct light is blocked; to block light from something
Example
We sat under the tree for some shade.
Nos sentamos bajo el árbol para un poco de sombra.
B1 verb /məˈsɑːʒ/

massage

masajear
Meaning
to rub and press muscles to relieve pain or tension; to manipulate information
Example
The therapist will massage your back to reduce muscle tension.
El terapeuta masajeará tu espalda para reducir la tensión muscular.
B1 noun /ˈkɒtən/

cotton

felicidad
Meaning
A soft white fibrous substance used to make cloth and thread.
Example
This shirt is made of pure cotton.
No pudo ocultar su felicidad cuando recibió el premio.
B1 noun /ˈtʌnəl/

tunnel

túnel
Meaning
an underground passage or shaft
Example
They dug a tunnel under the river.
Ellos cavaron un túnel debajo del río.
B1 noun /əˈkaʊntənt/

accountant

contador
Meaning
a person whose job is to keep or check financial accounts
Example
The accountant prepared the financial reports for the company.
El contador preparó los informes financieros para la empresa.
B1 noun /ˈbɪldər/

builder

constructor
Meaning
a person or company that constructs buildings or other structures
Example
The builder checked the site before starting the construction.
El constructor revisó el sitio antes de comenzar la construcción.
B1 adjective /æθˈlɛtɪk/

athletic

atlético, robusto
Meaning
physically strong, fit, and active; related to athletes or sports
Example
She has an athletic body because she exercises regularly.
Ella tiene un cuerpo atlético porque hace ejercicio regularmente.
B1 adjective /draɪd/

dried

seco
Meaning
without moisture; preserved by removing water
Example
She added some dried flowers to the vase for decoration.
Ella agregó algunas flores secas al jarrón para decoración.
B1 noun kəˈmjuːnɪti ˈprəʊɡræmz

Community Programs

programas comunitarios
Meaning
Organized activities involving local groups to promote environmental conservation.
Example
Community programs raise awareness about butterfly conservation.
Los programas comunitarios aumentan la conciencia sobre la conservación de las mariposas.
B1 noun /ˈkɪləɡræm/

kilogram

kilogramo
Meaning
the base unit of mass in the metric system equal to 1,000 grams
Example
The bag of rice weighs five kilograms.
La bolsa de arroz pesa cinco kilogramos.
B1 adjective /ˈhɪd.ən/

Hidden

oculto; secreto; invisible
Meaning
concealed from view; kept secret; not visible or apparent
Example
There was a hidden camera in the room.
Había una cámara oculta en la habitación.
B1 noun ɪˈməʊʃənz

emotions

emociones
Meaning
Strong feelings deriving from one's circumstances, mood, or relationships with others.
Example
Emotions ran high during the protests.
Las emociones fueron altas durante las protestas.
B1 adjective /dʌl/

Dull

aburrido; insípido; soso; monótono; tonto;
Meaning
lacking interest or excitement; not bright; lacking intelligence; tedious
Example
The lecture was very dull and boring.
La conferencia fue muy aburrida y tediosa.
B1 verb /kənˈtrɪbjuːt/

contribute

contribuir
Meaning
to give something, especially money, time, or effort, to help achieve or provide something
Example
Everyone contributed money to buy a farewell gift for the teacher.
Todos contribuyeron con dinero para comprar un regalo de despedida para el maestro.
B1 verb /əˈdæpt/

adapt

adaptar
Meaning
to adjust or change something to suit new conditions or situations
Example
He quickly adapted to the new environment.
Él rápidamente se adaptó al nuevo entorno.
B1 noun /ruːt/

route

ruta
Meaning
a way or course taken to get from one place to another
Example
The best route to the airport is through the highway.
La mejor ruta al aeropuerto es por la autopista.
B1 verb /kəˈmjuː.nɪ.keɪt/

communicate

comunicar
Meaning
to share or exchange information, ideas, or feelings
Example
They used gestures to communicate across the noisy room.
Ellos usaron gestos para comunicarse a través de la sala ruidosa.
B1 noun /ˌdʒen.əˈreɪ.ʃən/

Generation

generación; producción;
Meaning
all the people born and living at about the same time; the production or creation of something
Example
Each generation faces unique challenges that shape their worldview and values.
Cada generación enfrenta desafíos únicos que dan forma a su visión del mundo y valores.
B1 adjective /ˈsuːtəbl/

suitable

adecuado
Meaning
appropriate or right for a particular person, purpose, or situation
Example
This dress is suitable for the wedding.
Este vestido es adecuado para la boda.
B1 noun /ˌmoʊtɪˈveɪʃən/

motivation

motivación
Meaning
the reason or drive for acting or behaving in a particular way
Example
She lost her motivation to continue the project.
Ella perdió su motivación para continuar el proyecto.
B1 adjective /təˈrɪfɪk/

terrific

fantástico
Meaning
extremely good or excellent; very great or intense
Example
The concert last night was absolutely terrific.
El concierto de anoche fue absolutamente fantástico.
B1 verb /dræɡ/

drag

arrastrar
Meaning
to pull something heavy or difficult to move along the ground; to go somewhere unwillingly; to last too long
Example
She had to drag the heavy suitcase up the stairs.
Ella tuvo que arrastrar la maleta pesada por las escaleras.
B1 noun /ˈθɪr.i/

Theory

teoría
Meaning
a supposition or system of ideas intended to explain something
Example
Einstein's theory of relativity revolutionized physics.
La teoría de la relatividad de Einstein revolucionó la física.
B1 noun /ˈlek.tʃər/

Lecture

conferencia
Meaning
an educational talk to an audience, especially to students in a university or college
Example
The professor gave an interesting lecture on history.
El profesor dio una conferencia interesante sobre historia.
B1 noun /ˈæŋkəl/

ankle

tobillo
Meaning
the joint connecting the foot with the leg
Example
He twisted his ankle while playing football.
Se torció el tobillo mientras jugaba al fútbol.
B1 noun /ˈmʌðər ˈlæŋɡwɪdʒ/

mother language

lengua materna
Meaning
the first language a person learns from childhood; native language
Example
Children learn best when they are taught in their mother language.
Los niños aprenden mejor en su lengua materna.
B1 noun /ˈdʒɛntəlmən/

gentleman

caballero
Meaning
a man who is polite, courteous, and honorable
Example
He opened the door for her like a true gentleman.
Él abrió la puerta para ella como un verdadero caballero.
B1 noun /ˈænəlɪst/

analyst

analista
Meaning
a person who studies or examines something carefully to understand it or make decisions
Example
The financial analyst predicted a rise in the stock market.
El analista financiero predijo un aumento en el mercado de valores.
B1 adjective, noun /ˈroʊmən/

roman

romano / ciudadano romano
Meaning
relating to Rome or its people; a citizen of ancient Rome
Example
The Roman Empire influenced much of modern civilization.
El Imperio Romano influyó en gran parte de la civilización moderna.
B1 noun /taɪl/

tile

baldosa
Meaning
a flat piece of baked clay or other material used for covering roofs, floors, or walls
Example
The kitchen floor is covered with ceramic tiles.
El suelo de la cocina está cubierto con baldosas cerámicas.
B1 noun /ˌrɛdʒɪˈstreɪʃən/

registration

registro
Meaning
the action or process of enrolling or signing up for something
Example
The registration for the event will close tomorrow.
La inscripción para el evento se cerrará mañana.
B1 adverb /ˈnætʃərəli/

Naturally

de forma natural
Meaning
in a natural manner; as expected; of course
Example
She naturally excels in mathematics.
Ella sobresale naturalmente en matemáticas.
B1 adverb /ˈmiːn.waɪl/

Meanwhile

mientras tanto
Meaning
at the same time; during the same period
Example
She was cooking dinner, meanwhile he was setting the table.
Ella estaba cocinando la cena, mientras él estaba poniendo la mesa.
B1 noun /rɪˈleɪ.ʃən/

Relation

relación; vínculo
Meaning
the way in which two or more people or things are connected; a family member
Example
They have a strong business relation that has lasted for years.
Tienen una fuerte relación comercial que ha durado años.
B1 noun rɔː mətɪˈrɪəlz

raw materials

materias primas
Meaning
The basic material from which a product is made.
Example
The factory imports raw materials for production.
La fábrica importa materias primas para la producción.
B1 noun/adjective /ˈsmoʊ.kɪŋ/

smoking

fumar
Meaning
The act of inhaling and exhaling the smoke of tobacco or other substances; wearing a tuxedo (adjective, formal context).
Example
Smoking is prohibited inside the building.
Fumar está prohibido dentro del edificio.
B1 noun /ˈtɛkstbʊk/

textbook

libro de texto
Meaning
a book used for studying a subject in school or college
Example
She bought a new biology textbook for her class.
Ella compró un nuevo libro de biología para su clase.