ecosystem
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B2 noun ˈiː.kəʊˌsɪs.təm

ecosystem

生态系统
Meaning
A biological community of interacting organisms and their physical environment.
Example
A balanced ecosystem is crucial for environmental sustainability.
平衡的生态系统对环境可持续性至关重要。
B1 noun /ɪkˈspens/

Expense

费用; 支出;
Meaning
the cost required for something; money spent on something
Example
The travel expense for the business trip was covered by the company.
商务旅行的费用由公司承担。
B1 noun /ˈaɪ.braʊ/

Eyebrow

眉毛
Meaning
the strip of hair growing on the ridge above the eye socket
Example
She raised her eyebrow in surprise.
她惊讶地抬起了眉毛。
C1 adjective ɪˌɡæl.ɪˈteə.ri.ən

egalitarian

平等主义
Meaning
Believing in or based on the principle that all people are equal and deserve equal rights and opportunities.
Example
The new law promotes an egalitarian society.
新法律促进了平等主义社会的发展。
A2 adjective /ɪˌlɛkˈtrɒnɪk/

electronic

电子的
Meaning
Operating with or produced by the use of electronic devices.
Example
She bought an electronic keyboard for her music lessons.
她为她的音乐课买了一台电子键盘。
C1 adjective /ˈen.vi.əs/

Envious

嫉妒的; 羡慕的
Meaning
feeling or showing envy; jealous
Example
She felt envious of her friend's new car.
她对朋友的新车感到嫉妒。
C2 verb /ɪmˈbɪtər/

embitter

使愤怒
Meaning
To make someone resentful or angry; to cause bitterness.
Example
The unfair treatment embittered the employees.
不公平的待遇使员工感到愤怒。
C2 noun/adjective /ɪˈmɒliənt/

emollient

软化皮肤的物质
Meaning
a substance that softens or soothes the skin
Example
She used an emollient cream to treat her dry skin.
她用了一种伊摩利安特面霜来治疗她的干燥皮肤。
C2 verb /ɪkˈspɛktəreɪt/

expectorate

吐痰
Meaning
to cough up and spit out mucus from the throat or lungs
Example
The patient began to expectorate thick mucus.
患者开始吐出厚重的粘液。
A2 adjective /ɪnˈdʒɔɪ.ə.bəl/

Enjoyable

愉快的; 令人愉悦的
Meaning
pleasant; giving satisfaction or pleasure
Example
The movie was very enjoyable and made everyone laugh.
这部电影非常愉快，让每个人都笑了。
C1 adjective /ɪkˈskruːʃieɪtɪŋ/

excruciating

剧烈的
Meaning
causing extreme physical or mental pain
Example
She was in excruciating pain after the accident.
她在事故后痛苦不堪。
C2 noun /ˈjuːfəni/

euphony

和谐的音调
Meaning
The quality of being pleasing to the ear, especially through harmonious combination of words.
Example
The orator's speech was full of euphony and rhythm.
演讲者的演讲充满了和谐的音韵和节奏。
C2 noun /ɪˌnʌn.siˈeɪ.ʃən/

enunciation

发音，清晰发音
Meaning
The act of saying or pronouncing words clearly and distinctly.
Example
His enunciation was clear during the presentation.
他的发音在演讲中很清晰。
C1 adjective ˌɜː.ɡəˈnɒm.ɪk

ergonomic

人体工学设计
Meaning
Designed for efficiency and comfort in the working environment; user-friendly and reducing strain.
Example
The chair has an ergonomic design for better posture.
这把椅子有一个人体工学设计，能保持更好的姿势。
C2 verb /ɛksˈhjuːm/

exhume

掘出
Meaning
to dig out something buried, especially a body from the ground
Example
The archaeologists decided to exhume the ancient remains.
考古学家决定挖掘古老的遗骸。
C1 noun ˈiː.θɒs

ethos

文化、时代或社区的特征精神
Meaning
The characteristic spirit of a culture, era, or community as manifested in its beliefs and aspirations.
Example
The company's ethos is built on innovation and integrity.
公司的文化精神建立在创新和诚信之上。
C1 verb /ɪnˈlaɪvən/

enliven

使生动
Meaning
to make something more lively, interesting, or cheerful
Example
Her jokes helped enliven the dull meeting.
她的笑话帮助让枯燥的会议变得生动。
B2 adjective /ɪɡˈzɔː.stɪd/

exhausted

筋疲力尽
Meaning
Extremely tired; having no energy left.
Example
Feeling exhausted after waking up is common.
醒来后感到筋疲力尽是很常见的。
C1 noun /ˌjuːθəˈneɪʒə/

euthanasia

安乐死
Meaning
The practice of intentionally ending a life to relieve pain and suffering.
Example
The debate about euthanasia raises difficult ethical questions.
关于安乐死的辩论提出了困难的伦理问题。
C1 adjective /ɪmˈbrɔɪld/

embroiled

卷入
Meaning
being deeply involved in a difficult situation, conflict, or scandal
Example
She found herself embroiled in a heated family dispute.
她发现自己卷入了一场激烈的家庭争执。
C1 noun /ɪɡˈzuːbərəns/

exuberance

兴奋
Meaning
the quality of being full of energy, excitement, and cheerfulness
Example
Her exuberance made the whole team feel motivated.
她的兴奋让整个团队感到鼓舞。
C2 noun /eɪˈklɑː/

eclat

巨大成功
Meaning
Brilliant success, acclaim, or great public approval.
Example
The artist's debut performance was met with great éclat.
艺术家的首次演出获得了巨大的成功。
B1 verb /ˈɛmfəˌsaɪz/

emphasize

强调
Meaning
to give special importance or attention to something
Example
The teacher emphasized the importance of homework.
老师强调了作业的重要性。
B2 verb /ɪkˈskleɪm/

exclaim

呼喊
Meaning
to cry out suddenly in surprise, strong emotion, or excitement
Example
She exclaimed with joy when she saw the gift.
她看到礼物时高兴地叫了出来。
A2 adjective /ɪˈlɛktrɪk/

electric

电的
Meaning
Relating to or operated by electricity.
Example
The room was lit by an electric lamp.
房间里用电灯照明。
C2 noun /ˌɛksəˈdʒiːsɪs/

exegesis

注释
Meaning
A critical explanation or interpretation of a text, especially a religious scripture.
Example
The professor gave a detailed exegesis of the biblical passage.
教授对圣经章节进行了详细的注释。
C2 noun /ɪkˈskrɛsəns/

excrescence

异常生长
Meaning
An abnormal outgrowth or lump, often considered unattractive.
Example
The building was considered an excrescence on the landscape.
这座建筑被认为是景观中的一种异常生长。
C2 verb /ˈɛkspieɪt/

expiate

Meaning
to make amends for guilt or wrongdoing
Example
He tried to expiate his crime by helping the poor.
C2 adjective /ɪˈfɛmɪnət/

effeminate

女性化
Meaning
Having traits, tastes, or habits traditionally considered feminine, often used negatively for men.
Example
The critics described him as effeminate due to his gentle manner.
评论家因其温和的举止而将他描述为女性化。
A2 noun /ɪˈlek.trɪk fæn/

Electric fan

电风扇
Meaning
a device with rotating blades that creates airflow to cool or ventilate a room
Example
The electric fan keeps the room cool during hot summer days.
电风扇在炎热的夏天保持房间凉爽。
C1 verb /ɪɡˈzæspəˌreɪt/

exasperate

激怒
Meaning
to irritate or annoy intensely
Example
His constant complaints began to exasperate his coworkers.
他不断的抱怨开始让同事恼火。
B2 adverb /ˈiːɡərli/

Eagerly

急切地; 怀着强烈的愿望
Meaning
with keen interest or enthusiasm; with great desire
Example
The children eagerly waited for the holiday to begin.
孩子们急切地等待假期的开始。
C1 adjective /ɪɡˈzæktɪŋ/

exacting

苛刻的
Meaning
demanding a lot of effort, attention, or precision
Example
She is known for her exacting standards in design.
她因其苛刻的设计标准而闻名。
C1 adjective /ɪkˈsplɔɪtətɪv/

exploitative

剥削性的
Meaning
making use of a situation or people unfairly and unethically for one's own advantage
Example
The workers protested against the exploitative practices of the factory.
工人们抗议工厂的剥削行为。
C1 adjective /ˈɜːrstwaɪl/

erstwhile

曾经
Meaning
former or in the past
Example
They were erstwhile friends but no longer speak.
他们曾经是朋友，但现在不再交谈。
B1 noun /ɪkˈsep.ʃən/

Exception

例外
Meaning
a person or thing that is excluded from a general statement or does not follow a rule
Example
Most students passed the exam, with the exception of a few who were absent.
大多数学生通过了考试，唯一的例外是几位缺席的学生。
B2 noun /ɪˈkweɪʒən/

equation

方程
Meaning
a mathematical statement that shows the equality of two expressions
Example
He solved the equation to find the value of x.
他解出了方程，找到了x的值。
B2 adjective /ɪkˌsperɪˈmentl/

experimental

实验的
Meaning
based on untested ideas or techniques; relating to experiments or testing
Example
The scientists developed an experimental drug to treat cancer.
科学家们开发了一种实验性药物来治疗癌症。
B2 noun /ˈɛmbəsi/

embassy

大使馆
Meaning
the official residence or offices of an ambassador
Example
He works at the French embassy in Dhaka.
他在达卡的法国大使馆工作。
C1 noun /ˈɒntʊrɑːʒ/

entourage

随行人员
Meaning
A group of people attending or surrounding an important person.
Example
The celebrity arrived with her entourage of assistants and bodyguards.
名人带着她的随行人员和保镖到达了。
B2 noun /ɪkˈses/

Excess

过剩; 多余
Meaning
an amount of something that is more than necessary, permitted, or desirable
Example
The excess food from the party was donated to the local shelter.
派对剩余的食物被捐赠给了当地的庇护所。
A1 pronoun /ˈɛvrɪθɪŋ/

everything

一切
Meaning
all things; the whole lot
Example
He packed everything in his suitcase.
他把所有东西都装进了他的行李箱。
A1 noun /ˈiːv.nɪŋ/

evening

晚上
Meaning
the part of the day between afternoon and night
Example
We went for a walk in the cool evening.
我们在凉爽的晚上去散步。
B2 adjective /ɪkˈstɪr.i.ər/

Exterior

外部的；外表的；外部表面
Meaning
relating to the outside part or surface of something; outer
Example
The exterior of the building was painted in bright colors.
这座建筑的外观被涂上了鲜艳的颜色。
C1 noun /ɪkˈstræv.ə.ɡəns/

Extravagance

过度开支; 浪费
Meaning
lack of restraint in spending money; excessive expense
Example
The wedding celebration was criticized for its unnecessary extravagance.
婚礼庆典因不必要的奢华而受到批评。
C1 noun /ˌɛksɪˈkjuːʃənər/

executioner

刽子手
Meaning
A person who carries out a death sentence by execution.
Example
The executioner prepared the gallows for the condemned prisoner.
刽子手为被定罪的囚犯准备了绞刑架。
A2 noun /ˈel.ɪ.fənt/

Elephant

大象
Meaning
a very large gray mammal with long curved teeth and a long nose called a trunk
Example
The elephant is the largest land animal in the world.
大象是世界上最大的陆地动物。
B1 noun /ɪˈkɒnəmɪst/

economist

经济学家
Meaning
A person who studies or is an expert in economics.
Example
The economist predicted a rise in inflation.
经济学家预测了通货膨胀的上升。
A2 adverb /ˈiːkwəli/

equally

平等地
Meaning
in an equal or fair way; to the same degree
Example
The prize money was equally divided among the winners.
奖金在获胜者之间平等分配。
A2 noun /ˌen.təˈteɪn.mənt/

Entertainment

娱乐
Meaning
the action of providing or being provided with amusement or enjoyment
Example
The concert provided excellent entertainment for the entire family.
音乐会为全家人提供了极好的娱乐。
C2 adjective /ˈɛstɪməbl/

estimable

值得尊敬的
Meaning
Worthy of great respect.
Example
Her estimable achievements inspired the whole community.
她值得尊敬的成就鼓舞了整个社区。
B2 noun /ˈek.oʊ/

Echo

回声; 回响
Meaning
a sound that is reflected back; a repetition or imitation
Example
His voice created a clear echo in the empty cathedral.
他的声音在空荡的教堂里产生了清晰的回声。
B2 noun /iˈkɒl.ə.dʒi/

ecology

生态学
Meaning
the study of how living things interact with each other and their environment
Example
Ecology helps us understand how pollution affects animals and plants.
生态学帮助我们理解污染如何影响动物和植物。
C1 noun /ɪˈlɪpsɪs/

ellipsis

省略号
Meaning
The omission of words in a sentence, represented by three dots (...).
Example
The writer used an ellipsis to show that part of the quote was omitted.
作者使用省略号来表示引用的部分被省略。
C1 adjective /ɪˈvɒkətɪv/

evocative

唤起的
Meaning
bringing strong images, memories, or feelings to mind
Example
The music was evocative of her childhood memories.
这段音乐唤起了她的童年回忆。
A2 adjective /ˌjʊərəˈpiːən/

european

欧洲的
Meaning
Relating to Europe or its people.
Example
She studied European history at university.
她在大学学习了欧洲历史。
A2 noun ˌedʒ.ʊˈkeɪ.ʃən

education

教育
Meaning
The process of receiving or giving systematic instruction, especially at a school or university.
Example
Quality education is key to progress.
优质教育是进步的关键。
C1 noun /ˈɑːnkɔːr/

encore

安可
Meaning
An additional performance demanded by an audience at the end of a show.
Example
The band returned to the stage for an encore.
乐队返回舞台进行安可表演。
B2 noun /ɪkˈsploʊʒən/

explosion

爆炸
Meaning
a violent burst or release of energy, often causing damage and noise
Example
The explosion shook the entire neighborhood.
爆炸震动了整个社区。
B2 noun /ˌɛkskləˈmeɪʃən/

exclamation

感叹
Meaning
A sudden cry or remark expressing strong emotion or surprise.
Example
She let out an exclamation of joy when she heard the news.
当她听到这个消息时，她发出了喜悦的感叹。
C2 noun /ˌɛntəˈmɒlədʒi/

entomology

昆虫学
Meaning
The scientific study of insects.
Example
She studied entomology to understand the behavior of bees.
她学习昆虫学以了解蜜蜂的行为。
C1 noun /ɪɡˈzɛkjətər/

executor

遗嘱执行人
Meaning
A person appointed to carry out the terms of someone's will after their death.
Example
The executor managed the estate according to the deceased’s wishes.
遗嘱执行人根据已故者的意愿管理财产。
B2 verb /ɪnˈrɪtʃ/

enrich

丰富
Meaning
To improve or enhance the quality or value of something.
Example
Space exploration enriches human understanding.
太空探索丰富了人类的理解。
B1 adjective /ɪkˈstendɪd/

extended

扩展的
Meaning
longer or larger than usual; continuing for a longer time
Example
They took an extended vacation in Europe this summer.
他们这个夏天在欧洲度过了一个扩展的假期。
C2 verb /ɪˈfeɪs/

efface

抹去
Meaning
To erase or wipe out something; to make oneself inconspicuous.
Example
Time had effaced the letters on the old gravestone.
时间已经抹去了旧墓碑上的字母。
A2 verb /ɪkˈspleɪn/

explain

解释
Meaning
to make something clear or easy to understand by describing it in more detail
Example
The teacher explained the difficult concept to the students.
老师向学生们解释了这个困难的概念。
C2 noun /ɛˌspriː də ˈkɔːr/

esprit de corps

团队精神
Meaning
A feeling of pride, fellowship, and loyalty shared by members of a group.
Example
The team's esprit de corps was evident in their cooperative effort.
团队的精神在他们的合作努力中显而易见。
C2 verb /ɛnˈkɪndl/

enkindle

点燃，激发
Meaning
to set on fire or inspire strong emotion
Example
The speech enkindled hope in the audience.
演讲点燃了观众心中的希望。
C2 noun /ˈɪrˌʃɑːt/

earshot

听力范围
Meaning
the range or distance within which a sound can be heard
Example
The children whispered secrets out of earshot of their parents.
孩子们在父母的听力范围之外低声说着秘密。
A1 noun /ɪər/

Ear

耳朵; 听力; 听的能力
Meaning
the organ of hearing; the ability to hear or listen
Example
She whispered something in his ear during the meeting.
她在会议期间低声在他耳边说了些什么。
C1 noun /ˈiːzl̩/

easel

画架
Meaning
a frame for supporting an artist's canvas while painting or drawing
Example
The artist placed the canvas on the easel before starting to paint.
艺术家在开始绘画之前，将画布放在画架上。
C1 noun /ɪˌmæn.sɪˈpeɪ.ʃən/

Emancipation

解放
Meaning
the fact or process of being set free from legal, social, or political restrictions
Example
The emancipation of slaves was a significant moment in American history.
奴隶的解放是美国历史上的一个重要时刻。
A1 adjective /ˈiːzi/

easy

简单
Meaning
not difficult; requiring little effort
Example
The exam was surprisingly easy.
考试出乎意料的简单。
C1 adjective /ˌɛnɪɡˈmætɪk/

enigmatic

神秘的
Meaning
mysterious and difficult to interpret or understand
Example
He gave me an enigmatic smile.
他给了我一个神秘的微笑。
B2 verb /ɪˈreɪs/

erase

擦除
Meaning
to remove completely; to delete or wipe out
Example
Use an eraser to erase the pencil marks.
使用橡皮擦来擦掉铅笔痕迹。
C1 noun /eb/

Ebb

退潮; 海水下降
Meaning
the receding tide; a gradual decline or reduction
Example
The fishermen waited for the ebb before returning to shore.
渔民们在回到岸边之前等待着退潮。
C2 noun ˈɛn.ɡræm

Engram

大脑中用于存储和提取记忆的物理标记
Meaning
Physical signs or patterns in the brain for memory storage and retrieval
Example
Scientists study engrams to understand how memories are stored.
科学家们研究恩格拉姆，以了解记忆是如何存储的。
A2 noun /ɪɡˈzæm/

exam

考试
Meaning
a formal test of a person's knowledge or skill in a subject
Example
She studied hard for her final exam.
她为了最后的考试努力学习。
C1 verb /ɪnˈtrɛntʃ/

entrench

扎根
Meaning
To establish something so firmly that it is difficult to change.
Example
The company entrenched its position in the market through innovation.
公司通过创新巩固了其市场地位。
B1 noun /ˈɛldər/

elder

长者
Meaning
a person who is older or has higher rank; an older person in a family or community
Example
We should always respect our elders.
我们应该永远尊敬我们的长辈。
C2 adjective /ˌɛvɪˈdɛnʃəl/

evidential

证据的
Meaning
relating to or providing evidence
Example
The lawyer presented evidential support for her claims.
律师为她的诉求提供了证据支持。
A2 noun /ˈɛndɪŋ/

ending

结局
Meaning
the final part of something, such as a story, event, or period of time
Example
The movie had a surprising ending that no one expected.
这部电影有一个令人惊讶的结局，没人预料到。
C1 adjective /ɪkˈstætɪk/

ecstatic

欣喜若狂
Meaning
Feeling or expressing overwhelming happiness or excitement.
Example
The fans were ecstatic after their team won the championship.
球迷在他们的球队赢得冠军后欣喜若狂。
A2 adjective /ˈɛkstrə/

extra

额外的
Meaning
More than what is usual, expected, or necessary
Example
She brought some extra food for the picnic.
她为野餐带来了额外的食物。
A1 noun /iːst/

east

东
Meaning
The direction from which the sun rises; one of the four cardinal points.
Example
The sun rises in the east.
太阳从东方升起。
C1 adjective /ˈen.vi.ə.bəl/

Enviable

值得羡慕的
Meaning
causing envy; desirable
Example
Her success was enviable among her peers.
她的成功在同事中是值得羡慕的。
A1 determiner/pronoun /iːtʃ/

each

每个
Meaning
every one of two or more people or things considered separately
Example
Each student received a certificate.
每个学生都收到了证书。
C2 adjective /ɪˈfjuːsɪv/

effusive

溢于言表的
Meaning
Expressing feelings of gratitude, pleasure, or approval in an unrestrained or heartfelt manner.
Example
She gave him an effusive welcome after his long journey.
在她漫长的旅程后，她给了他一个溢于言表的欢迎。
C1 adverb /ˈiːstwədz/

Eastwards

向东
Meaning
towards the east; in an eastern direction
Example
The river flows eastwards into the ocean.
河流向东流入海洋。
C1 verb /ɪmˈbrɔɪdər/

embroider

刺绣
Meaning
to decorate fabric with patterns using a needle and thread
Example
She embroidered flowers on the pillowcase.
她在枕套上刺绣了花朵。
B2 adjective /ɪnˈvaɪrənmənt ˈfrɛndli/

environment-friendly

环保
Meaning
Designed or produced in a way that causes minimal harm to the environment, often using sustainable materials and processes that reduce ecological impact.
Example
Environment-friendly products are designed to reduce ecological damage.
环保产品旨在减少生态损害。
C1 noun ɪnˌvaɪ.rənˈmen.təl ˌtræns.fəˈmeɪ.ʃən

environmental transformation

环境转型
Meaning
A significant change in environmental conditions or ecological systems.
Example
The city demonstrates environmental transformation.
这座城市展示了环境转型。
C2 verb /ɪˈfeɪsɪŋ/

effacing

抹去 / 使自己不显眼
Meaning
erasing or making oneself inconspicuous; to remove or diminish in significance
Example
She kept effacing herself during the meeting so that others could shine.
她在会议期间不断抹去自己，以便其他人能够发光。
C1 noun /ˈiː.zi tʃeər/

Easy-chair

安乐椅
Meaning
a comfortable chair with arms and a back that reclines
Example
He relaxed in his favorite easy-chair after work.
他下班后在他最喜欢的安乐椅上放松。
C2 noun /ˌɛfəˈvɛsəns/

effervescence

泡沫
Meaning
The release of gas bubbles; vivacity or high-spiritedness.
Example
Her effervescence made her the life of the party.
她的泡沫让她成为派对的灵魂。
C2 adverb /ɪkˈstem.pɔːr/

Extempore

即兴的；即席的；未经准备的
Meaning
without preparation; spontaneously; improvised
Example
The speaker delivered an impressive extempore speech at the conference.
演讲者在会议上发表了一场令人印象深刻的即兴演讲。
C2 adverb /ˌɛkspəˈdɪʃəsli/

expeditiously

迅速而高效地
Meaning
in a quick and efficient manner
Example
The application was processed expeditiously.
申请被迅速而高效地处理了。
B2 noun /ɪmˈpaʊə.mənt/

empowerment

赋权
Meaning
Authority or power given to someone to do something.
Example
Empowerment initiatives enhance confidence.
赋权举措提升信心。
B2 adjective /ˈɛv.ə.ɡriːn/

evergreen

常绿
Meaning
Remaining green and functional throughout the year; not shedding leaves seasonally.
Example
Evergreen trees like pine and fir stay green year-round.
常绿树木如松树和冷杉树全年保持绿色。
C2 noun /ˈiːɡres/

egress

出口
Meaning
The action of going out or leaving a place; an exit.
Example
The emergency door provided an egress for the trapped workers.
紧急出口为被困的工人提供了一个出口。
C2 adjective /ˈek.wə.bəl/

Equable

平和
Meaning
calm and even-tempered; not easily disturbed
Example
He maintained an equable temperament throughout the crisis.
他在整个危机期间保持了平和的性格。
C2 verb /ɪnˈskɒns/

ensconce

安顿, 隐藏
Meaning
to settle comfortably or securely in a place; to hide or shelter firmly
Example
She ensconced herself in a cozy armchair by the fireplace.
她坐在壁炉旁的一张舒适椅子上。
B2 noun /ˌek.spɪˈdɪʃ.ən/

Expedition

远征
Meaning
a journey undertaken by a group of people with a particular purpose; organized trip for exploration
Example
The mountain climbing expedition required months of careful planning and preparation.
登山远征需要数月的精心规划和准备。
C2 noun /juː/

Ewe

母羊
Meaning
a female sheep
Example
The ewe gave birth to twin lambs.
母羊生下了双胞胎羔羊。
B1 adjective /ɪkˈspɪəriənst/

experienced

有经验的
Meaning
having knowledge or skill in a particular field gained through experience
Example
She is an experienced teacher who knows how to handle difficult students.
她是一个经验丰富的老师，知道如何处理困难的学生。
C1 noun /ˌɛkstrəˈdɪʃən/

extradition

引渡
Meaning
the official process of sending someone accused of a crime to another country or state
Example
The extradition of the suspect was delayed due to legal issues.
由于法律问题，嫌疑人的引渡被延迟了。
C1 verb /ɪnˈlɪst/

enlist

报名
Meaning
to join or sign up, especially for military service; to secure someone's support or help
Example
He decided to enlist in the army after graduation.
他决定毕业后加入军队。
B1 verb /ɪnˈʃʊər/

ensure

确保
Meaning
To make certain that something will happen or be the case.
Example
Please ensure that the door is locked before you leave.
请确保在离开之前门已锁好。
C2 verb /ɪnˈkæmp/

encamp

扎营
Meaning
to set up or establish a camp
Example
The soldiers encamped near the river for the night.
士兵们在河边扎营过夜。
A2 noun ˈen.ə.dʒi

energy

能源
Meaning
Power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines.
Example
Clean energy sources help reduce pollution.
清洁能源有助于减少污染。
B2 noun ɪˈmɪʃ.ən

emission

排放
Meaning
The release or discharge of gases, particles, or other substances into the environment.
Example
Car manufacturers are reducing carbon emissions.
汽车制造商正在减少碳排放。
C2 verb /ɪkˈspʌndʒ/

expunge

擦除
Meaning
To erase or remove completely, often something unwanted.
Example
He managed to expunge the embarrassing memory from his mind.
他设法把尴尬的记忆从脑海中抹去。
C1 noun /ˈɛf.ɪ.kə.si/

efficacy

效能
Meaning
The ability to produce a desired or intended result; effectiveness.
Example
The efficacy of the vaccine has been proven in trials.
疫苗的效能在试验中得到了证明。
C2 noun /ˌiː.kəʊ.tɒkˈsɪ.kə.lə.dʒi/

ecotoxicology

生态毒理学
Meaning
The study of the effects of chemical pollution on the environment.
Example
Ecotoxicology studies the effects of pesticides on wildlife.
生态毒理学研究农药对野生动物的影响。
C1 adjective /ˈevər ˈlæstɪŋ/

Ever-lasting

永恒的; 持久的;
Meaning
eternal; permanent; enduring forever
Example
Their love is ever-lasting and will never fade.
他们的爱是永恒的，永不褪色。
B2 noun /ˈaɪ.lɪd/

Eyelid

眼皮
Meaning
either of the upper or lower folds of skin that cover the eye when closed
Example
Her eyelids felt heavy with sleep.
她的眼皮因睡意而感到沉重。
A2 noun /ˈɪər.ɪŋ/

Ear-ring

耳环
Meaning
a piece of jewelry worn on the earlobe or ear
Example
Her diamond earrings caught everyone's attention.
她的钻石耳环吸引了所有人的注意。
C2 verb ɪɡˈzɔːrt

exhort

敦促
Meaning
To strongly encourage or urge someone to do something.
Example
The teacher exhorted students to work hard for exams.
老师敦促学生为了考试而努力学习。
C2 verb /ɪkˈspeɪʃiˌeɪt/

expatiate

详细讨论或写作
Meaning
to speak or write at length or in detail
Example
The professor expatiated on the importance of critical thinking.
教授详细阐述了批判性思维的重要性。
C1 noun /ˈɛdɪfɪs/

edifice

大楼
Meaning
A large, impressive building or structure.
Example
The museum is an impressive edifice in the city center.
博物馆是市中心一座令人印象深刻的大楼。
A1 number /eɪt/

eight

八
Meaning
The number equivalent to the product of two and four; one more than seven.
Example
There are eight apples in the basket.
篮子里有八个苹果。