commodities
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B2 noun /kəˈmɒ.dɪ.tiz/

commodities

商品
Meaning
Raw materials or primary agricultural products that can be bought and sold.
Example
The prices of commodities like oil and gold fluctuate frequently.
像石油和黄金这样的商品价格经常波动。
B2 verb /kəmˈpoʊz/

compose

创作
Meaning
to create music or writing; to make up; to calm oneself
Example
She composes beautiful songs.
她创作美丽的歌曲。
B2 noun, verb /kɜːrs/

curse

诅咒
Meaning
a solemn wish that harm or misfortune should befall someone; a rude or offensive word or phrase; to utter offensive words or wish harm upon someone
Example
He cursed loudly when he realized he had lost his wallet.
当他意识到自己丢了钱包时，他大声咒骂。
B2 adjective /keɪˈɒtɪk/

Chaotic

混乱的; 无秩序的
Meaning
in a state of complete confusion and disorder
Example
The situation became chaotic after the announcement.
情况在公告后变得混乱。
B2 noun/verb /sɪˈmɛnt/

cement

Meaning
a powdery substance that binds materials together; to make something strong or permanent
Example
The treaty helped cement the relationship between the two countries.
B2 noun /ˈkreɪ.dəl/

Cradle

摇篮
Meaning
a small bed for a baby, especially one that rocks from side to side
Example
The baby sleeps peacefully in the cradle.
婴儿在摇篮里安静地睡觉。
B2 verb /kənˈsiːl/

conceal

隐藏
Meaning
to hide something or keep it secret
Example
He tried to conceal his disappointment behind a smile.
他试图用微笑掩饰自己的失望。
B2 noun /kənˈvɜːrtər/

converter

转换器
Meaning
a device or person that changes something from one form, system, or use to another; a tool that converts data, energy, or materials
Example
The engineer used a converter to change AC power into DC power.
工程师使用转换器将交流电转换为直流电。
B2 noun /kənˈvɛn.ʃən.əl ˈfɑːr.mɪŋ/

conventional farming

传统农业
Meaning
Traditional farming method using synthetic fertilizers, pesticides, and modern technology.
Example
Conventional farming increases crop production using fertilizers.
传统农业通过使用肥料增加作物生产。
B2 noun /ˌkɒn.tɪˈnjuː.ɪ.ti/

continuity

连续性
Meaning
the state of being continuous or connected; consistency over time
Example
Maintaining continuity in leadership is essential for organizational stability.
在领导力中保持连续性对于组织稳定性至关重要。
B2 noun /kraɪst/

christ

基督
Meaning
the title given to Jesus, considered the Messiah in Christianity
Example
Christ is central to Christian faith.
基督是基督教信仰的核心。
B2 noun /ˌklæsɪfɪˈkeɪʃən/

classification

分类
Meaning
the action or process of classifying something into groups based on shared characteristics.
Example
The classification of animals helps in understanding their biology.
动物的分类有助于理解它们的生物学。
B2 adverb /kənˈsɪstəntli/

consistently

持续地
Meaning
in a way that does not vary; regularly and dependably
Example
She has been performing consistently well in her studies.
她在学习中始终表现得很好。
B2 noun /kənˈspɪrəsi/

conspiracy

阴谋
Meaning
A secret plan by a group to do something unlawful or harmful.
Example
The police uncovered a conspiracy to overthrow the government.
警方揭露了一项推翻政府的阴谋。
B2 adjective ˈkɒɡnɪtɪv

cognitive

认知的
Meaning
Related to mental processes of perception, memory, judgment, and reasoning.
Example
Cognitive functions improve with practice and learning.
认知功能通过练习和学习得到改善。
B2 adjective /kənˈsek.jə.tɪv/

Consecutive

连续的
Meaning
following each other in uninterrupted succession; sequential
Example
She won three consecutive matches in the tournament.
她在比赛中赢得了三场连续的比赛。
B2 noun /ˈkɒm.pɒ.stɪŋ/

composting

堆肥
Meaning
The process of recycling organic waste into fertile fertilizer.
Example
Composting reduces waste and enhances soil fertility.
堆肥减少垃圾并提高土壤肥力。
B2 verb /saɪt/

cite

引用
Meaning
to quote; to mention as an example or proof
Example
The lawyer cites relevant case law.
律师引用相关案例法。
B2 verb /kənˈstrʌkt/

construct

建造
Meaning
to build or form something by putting parts together
Example
They plan to construct a new bridge over the river.
他们计划在河上建一座新桥。
B2 noun /ˈkɒntræktər/

contractor

承包商
Meaning
a person or company that agrees to provide materials or labor to perform a service or do a job
Example
The contractor completed the building project on time.
承包商按时完成了建筑项目。
B2 noun /ˈklʌstər/

cluster

串
Meaning
a group of similar things or people positioned close together
Example
The grapes grew in a tight cluster.
葡萄在一个紧密的串中生长。
B2 noun /kəmˈpliːʃən/

completion

完成
Meaning
the action or process of finishing something
Example
The completion of the project will take another few weeks.
项目的完成将再需要几周时间。
B2 adjective /ˌkrɒnəˈlɒdʒɪkəl/

chronological

按时间顺序
Meaning
Arranged in the order in which events happened.
Example
The events were listed in chronological order.
这些事件按时间顺序列出。
B2 noun /kənˌtɪn.juˈeɪ.ʃən/

continuation

延续
Meaning
the action of carrying something on over time; extension
Example
The continuation of the series was announced after the finale.
系列的延续在结局后宣布。
B2 noun /ˈtʃɒp.ər/

Chopper

斧头
Meaning
a tool with a heavy blade for chopping wood; a helicopter
Example
The lumberjack swung the chopper to cut down the tree.
伐木工挥动斧头砍倒树木。
B2 noun /koʊl/

coal

煤炭
Meaning
a black or dark brown rock used as fuel, formed from decomposed plant matter
Example
The factory still uses coal as its main source of energy.
工厂仍然将煤炭作为其主要的能源来源。
B2 adjective /kəʊˈhɪə.rənt/

coherent

连贯
Meaning
Logical and consistent; forming a unified whole; clear and easy to understand.
Example
His speech was clear and coherent.
他的演讲清晰且连贯。
B2 noun/verb /ˈkɒmplɪmənt/

complement

补充
Meaning
something that completes or goes well with something; to add something that enhances or improves
Example
The scarf complements her outfit perfectly.
围巾完美地补充了她的装束。
B2 noun /ˌkɑː.bəʊˈhaɪ.dreɪts/

carbohydrates

碳水化合物
Meaning
Organic compounds consisting of carbon, hydrogen, and oxygen, serving as a primary source of energy for the body.
Example
Whole grains are a great source of healthy carbohydrates.
全谷物是健康碳水化合物的极佳来源。
B2 adjective /ˈkɒŋ.kriːt/

Concrete

坚固的；真实的；有形的；具体的
Meaning
solid; real; tangible; actual and specific
Example
We need concrete evidence to support our claims.
我们需要具体的证据来支持我们的主张。
B2 adverb /kənˈtɪnjuəli/

Continually

持续地; 一再
Meaning
without stopping; repeatedly
Example
She continually checked her phone for messages.
她不断检查她的手机是否有新消息。
B2 noun /kloʊv/

Clove

丁香
Meaning
aromatic flower buds of a tree in the family Myrtaceae, used as a spice
Example
She added a few cloves to the mulled wine for extra flavor.
她在热红酒中加入了一些丁香，以增加风味。
B2 adjective /ˈkʌnɪŋ/

cunning

狡猾
Meaning
Having or showing skill in achieving one's ends by deceit or evasion; cleverness in a tricky way.
Example
The cunning fox tricked the farmer.
狡猾的狐狸欺骗了农夫。
B2 noun /kəˈtæstrəfi/

catastrophe

灾难
Meaning
A sudden and widespread disaster or misfortune.
Example
The earthquake was a catastrophe for the entire region.
地震对整个地区来说是一次灾难。
B2 noun /kəˈmændər/

Commander

指挥官
Meaning
a person in authority over a military unit; leader of armed forces
Example
The commander ordered his troops to advance.
指挥官命令他的部队前进。
B2 noun /ˈkɑːmpaʊnd/

compound

化合物 / 封闭区域
Meaning
a thing that is composed of two or more separate elements; an enclosed area with buildings
Example
The scientist studied the chemical compound in the lab.
科学家在实验室研究了化学化合物。
B2 adjective /kəmˈpʌlsəri/

compulsory

强制性
Meaning
Required by law or a rule; obligatory.
Example
Wearing seat belts is compulsory in most countries.
在大多数国家，佩戴安全带是强制性的。
B2 adjective /ˈkeər.friː/

Carefree

无忧无虑; 轻松愉快;
Meaning
free from anxiety or responsibility; lighthearted; worry-free
Example
She lived a carefree life, traveling the world without any worries.
她过着无忧无虑的生活，环游世界没有任何担忧。
B2 adjective kɒnˈtek.stju.əl

contextual

情境的
Meaning
Depending on or relating to the circumstances or setting; context-dependent.
Example
Contextual meaning changes depending on usage.
上下文意义根据使用情况而变化。
B2 noun/verb /ˈtʃɑːrtər/

charter

包机 / 租赁
Meaning
a written document granting rights or privileges; to hire a vehicle or vessel for temporary use
Example
The company decided to charter a bus for the trip.
公司决定为旅行租用一辆巴士。
B2 adjective kənˈven.ʃən.əl

conventional

传统的
Meaning
Based on or in accordance with what is generally done or believed; traditional, standard, customary.
Example
Many farmers still use conventional farming methods.
许多农民仍然使用传统的农业方法。
B2 noun /ˈkʌlprɪt/

culprit

罪犯
Meaning
a person who is responsible for a crime or misdeed
Example
The police caught the culprit behind the robbery.
警察抓住了抢劫案背后的罪犯。
B2 noun /krɑk pɑt/

Crock pot

慢炖锅
Meaning
an electric cooking pot that cooks food slowly at low temperatures
Example
I put the chicken and vegetables in the crock pot before going to work.
我在上班前把鸡肉和蔬菜放入慢炖锅中。
B2 noun /ˈkɒmənˌtɛri/

commentary

评论
Meaning
An expression of opinions or explanations about an event, situation, or text.
Example
The professor's commentary on the novel was insightful.
教授对小说的评论非常有见地。
B2 adjective /ˈkɜːrtiəs/

courteous

有礼貌的
Meaning
polite, respectful, or considerate in manner
Example
The staff at the hotel were very courteous to all guests.
酒店的员工对所有客人都非常有礼貌。
B2 noun /kʌlt/

cult

邪教
Meaning
a system of religious veneration and devotion directed toward a particular figure or object
Example
The cult followed their leader with great devotion.
邪教以极大的献身精神追随他们的领袖。
B2 noun /ˌkɒnsərˈveɪʃən ˈmuːvmənt/

Conservation Movement

自然保护运动
Meaning
A political, environmental, and social movement that seeks to protect natural resources including plant and animal species as well as their habitat for the future.
Example
The conservation movement began in the 19th century to protect wildlife.
自然保护运动在19世纪开始，旨在保护野生动物。
B2 verb /kənˈfaɪn/

confine

限制
Meaning
to restrict someone or something within certain limits; to keep someone in a closed space
Example
The prisoner was confined to his cell for 23 hours a day.
囚犯每天被关在他的牢房里23小时。
B2 verb /siːs/

cease

停止
Meaning
to bring or come to an end; to stop doing something
Example
The noise ceased as soon as the children went inside.
噪音一旦孩子们进去了就停止了。
B2 adjective /kəˈrɛspɒndɪŋ/

corresponding

相关的
Meaning
matching or related to something
Example
The corresponding page in the book explains the process in detail.
书中的相关页面详细解释了该过程。
B2 phrase kəˈlek.tɪv ˈæk.ʃən

collective action

集体行动
Meaning
Action taken by a group of people working together toward a common goal or purpose.
Example
Collective action is needed to mitigate climate change.
集体行动对于减缓气候变化很重要。
B2 preposition /kənˈsɜːnɪŋ/

concerning

关于
Meaning
about or relating to something; causing worry or anxiety
Example
There are some reports concerning the new project.
关于新项目有一些报告。
B2 adjective ˈkʌl.ɪ.nər.i

culinary

烹饪的
Meaning
Related to cooking or the preparation of food, especially in a sophisticated or professional manner.
Example
Culinary advancements enhance the dining experience.
烹饪的进步提升了用餐体验。
B2 noun /ˈkʌs.tə.mər rɪˈten.ʃən/

Customer Retention

客户保持
Meaning
The ability of a company or product to retain its customers over some specified period.
Example
High customer retention increases business sustainability.
高客户保持率增加了商业可持续性。
B2 verb /ˌkoʊ.ɪnˈsaɪd/

coincide

同时发生
Meaning
To occur at the same time or to be in agreement.
Example
The meeting coincided with her birthday.
会议与她的生日重合。
B2 noun /ˈklær.ɪ.ti/

clarity

清晰度
Meaning
The quality of being coherent and intelligible; transparency or lucidity.
Example
The speaker's clarity made the concept easy to understand.
演讲者的清晰度使得这个概念变得容易理解。
B2 adjective /kɒzˈmɛt.ɪk/

cosmetic

化妆品
Meaning
relating to beauty or appearance; intended to improve looks
Example
She bought a new cosmetic cream for her skin.
她为她的皮肤买了一种新的化妆品。
B2 noun /kəmˈpæʃ.ən/

Compassion

同情
Meaning
sympathetic concern for the sufferings or misfortunes of others; deep awareness of suffering with a desire to help
Example
She showed great compassion towards the homeless children by providing them food and shelter.
她通过为无家可归的孩子提供食物和住所，表现出极大的同情。
B2 adjective /kəmˈpoʊzd/

composed

冷静
Meaning
calm and in control of oneself; made up of or formed from
Example
He remained composed even under pressure.
他在压力下依然保持冷静。
B2 adjective /ˈkɒm.pɪ.tənt/

Competent

有能力的; 能干的
Meaning
having the necessary skill or knowledge to do something successfully; capable
Example
She is a competent manager who handles all tasks efficiently.
她是一个能干的经理，能够高效地处理所有任务。
B2 noun /kɔːrd/

cord

绳子
Meaning
a long, thin, flexible string or rope
Example
He tied the package with a strong cord.
他用一根强绳子绑住了包裹。
B2 verb /tʃænt/

chant

吟诵
Meaning
to sing or recite in a rhythmic way
Example
The monks chant prayers in the temple.
僧侣在寺庙里吟诵祈祷。
B2 adjective /ˌkɒn.fɪˈden.ʃəl/

Confidential

机密; 私人; 应保持秘密的
Meaning
secret; private; intended to be kept secret
Example
Please keep this information confidential.
请保持这些信息的机密性。
B2 noun /kənˈkʌʃən/

concussion

脑震荡
Meaning
A temporary unconsciousness or shock caused by a blow to the head.
Example
He suffered a concussion after falling from the bike.
他在从自行车上摔下来后，遭受了脑震荡。
B2 verb /ˈkɒm.plɪ.keɪt/

complicate

使复杂
Meaning
To make something more difficult or confusing.
Example
The new rules will only complicate the process.
新规则只会使这个过程更加复杂。
B2 noun /ˈkɑn.trəˌvɜr.si/

Controversy

争议; 分歧
Meaning
prolonged public disagreement or heated discussion; a dispute or argument involving opposing viewpoints
Example
The new policy sparked a major controversy among the citizens.
新政策在市民中引发了巨大的争议。
B2 noun/adjective /səˈvɪliən/

civilian

平民
Meaning
a person not in the armed forces or police
Example
The area was evacuated to protect the civilians.
该区域已被疏散以保护平民。
B2 noun; verb /ˈkætəlɒɡ/

catalogue

目录
Meaning
a complete list of items, typically one in alphabetical or systematic order; to make a systematic list of items
Example
The library decided to catalogue all new books digitally.
图书馆决定以数字方式编目所有新书。
B2 noun /ˈkoʊ.brə/

Cobra

眼镜蛇
Meaning
a venomous snake with a hood that can be spread when threatened
Example
The cobra raised its hood and hissed at the intruder.
眼镜蛇抬起了它的帽子，对入侵者发出了嘶嘶声。
B2 noun ˌkætəˈstrɒfɪk ɪˈvents

catastrophic events

灾难性事件
Meaning
Extremely destructive or damaging events that cause widespread devastation.
Example
Cyclones are catastrophic events in Bangladesh.
气旋是孟加拉国的灾难性事件。
B2 noun /sərˈkʌmfərəns/

circumference

周长
Meaning
the distance around the edge of a circle
Example
The teacher asked us to calculate the circumference of the circle.
老师让我们计算圆的周长。
B2 noun /kleɪ/

clay

黏土
Meaning
a natural material made of fine earth that becomes hard when baked, used for making pottery
Example
The artist molded the wet clay into a beautiful vase.
艺术家把湿黏土塑造成一个美丽的花瓶。
B2 noun /ˈkɒm.ɪt/

Comet

彗星
Meaning
a celestial object consisting of ice and dust that develops a tail when approaching the sun
Example
Halley's Comet appears in the sky every 76 years.
哈雷彗星每76年出现在天空中。
B2 noun /kwɪˈziːn/

cuisine

美食
Meaning
A style or method of cooking, especially characteristic of a particular country or region.
Example
Italian cuisine is famous all over the world.
意大利美食在全世界都很有名。
B2 noun/adjective /kənˈstɪtʃuənt/

constituent

成分 / 选民
Meaning
Noun: A member of a constituency or an essential part of something. Adjective: Being a necessary part of a whole.
Example
The senator met with his constituents to discuss local issues.
参议员与他的选民会面，讨论当地问题。
B2 noun /ˈkʌmbæk/

comeback

东山再起
Meaning
A return to a former status or success after a period of decline.
Example
The singer made a remarkable comeback after years of silence.
歌手在沉默多年后取得了显著的东山再起。
B2 noun /ˈkænən/

Cannon

大炮
Meaning
large heavy gun that fires cannonballs or shells
Example
The castle was defended by several large cannons.
城堡由几门大加农炮保卫。
B2 noun /kriːk/

creek

小溪
Meaning
a small stream or narrow river
Example
We went fishing by the creek near our house.
我们在离家很近的小溪旁钓鱼。
B2 verb /ˈkæt.ɪ.ɡə.raɪzd/

categorized

分类
Meaning
Placed in a particular class or group.
Example
The city was categorized as highly polluted.
这个城市被归类为高度污染。
B2 adjective /ˈtʃiːzi/

cheesy

便宜/过于感伤
Meaning
tacky, overly sentimental, or cheap in quality
Example
The movie was funny but a bit too cheesy.
电影很有趣，但有点太俗气了。
B2 noun /kəˈmɪʃənər/

commissioner

专员
Meaning
an official in charge of a particular department or area
Example
The police commissioner addressed the media about the incident.
警察专员向媒体介绍了事件。
B2 noun /ˈkaʊnsəlɪŋ/

counseling

咨询
Meaning
professional guidance or therapy to help resolve personal or psychological problems
Example
She decided to go for counseling after feeling stressed for months.
在感到几个月的压力后，她决定去咨询。
B2 noun /ˈkɒn.ʃəs.nəs/

consciousness

意识
Meaning
The state of being aware of and able to think about one's existence, sensations, thoughts, and surroundings.
Example
Meditation helps improve consciousness and clarity of thought.
冥想有助于提高意识和思维的清晰度。
B2 adverb /ˈtʃiːfli/

chiefly

主要
Meaning
mainly; primarily
Example
The festival is celebrated chiefly by young people.
这个节日主要由年轻人庆祝。
B2 noun /ˈsaɪkloʊn/

cyclone

气旋
Meaning
a large-scale air mass that rotates around a strong center of low atmospheric pressure; a violent tropical storm
Example
The cyclone caused severe flooding along the coast.
气旋在沿海地区造成了严重的洪水。
B2 noun /ˌkɑn.frənˈteɪ.ʃən/

Confrontation

对抗
Meaning
a hostile or argumentative meeting or situation between opposing parties; direct challenge or opposition
Example
The confrontation between the two leaders ended without any agreement.
两位领导人之间的对抗以没有任何协议结束。
B2 verb /kəmˈpɛl/

compel

强迫
Meaning
To force or drive someone to do something.
Example
The law compels citizens to pay taxes.
法律强迫公民缴纳税款。
B2 noun /ˌkɔːriˈændər/

Coriander

香菜
Meaning
aromatic herb with feathery leaves used for flavoring food; also refers to the seeds used as spice
Example
Fresh coriander leaves are sprinkled on top of the curry.
新鲜的香菜叶撒在咖喱上。
B2 noun /ˈkæbɪnət/

Cabinet

橱柜
Meaning
a piece of furniture with doors and shelves used for storage
Example
The kitchen cabinet is full of dishes and utensils.
厨房的橱柜里满是盘子和餐具。
B2 noun /kɜːrv/

Curve

曲线; 转弯
Meaning
a line or outline that gradually deviates from being straight; a bend or turn in a road or path
Example
The driver slowed down as he approached the sharp curve in the mountain road.
当司机接近山路中的急转弯时，他减慢了速度。
B2 adjective ˌkɒn.trəˈvɜː.ʃəl

controversial

有争议的
Meaning
Giving rise to public disagreement or heated discussion.
Example
The policy remains controversial.
该政策仍然存在争议。
B2 noun /ˌkrɛd.ɪˈbɪl.ɪ.ti/

credibility

可信度
Meaning
The quality of being trusted and believed in; trustworthiness.
Example
His credibility as a leader remains unquestioned.
他作为领导者的可信度无可争议。
B2 noun /ˈkaʊntərˌpɑːrt/

counterpart

对口人
Meaning
a person or thing that corresponds to or has the same function as another
Example
The CEO met with his counterpart in the partner company.
首席执行官与合作公司中的对口人会面。
B2 verb /kriːp/

creep

爬行
Meaning
to move slowly and quietly; to make someone feel uncomfortable
Example
She crept quietly up the stairs to avoid waking anyone.
她悄悄地走上楼梯，以免吵醒任何人。
B2 noun /ˈkɒn.flɪkt ˌrez.əˈluː.ʃən/

conflict resolution

冲突解决
Meaning
The process of finding peaceful solutions to disputes or disagreements between parties.
Example
Conflict resolution is vital for global peace.
冲突解决对于全球和平至关重要。
B2 noun /kɔːrps/

corpse

尸体
Meaning
a dead body, especially of a human
Example
The police discovered a corpse in the abandoned house.
警察在废弃的房子里发现了一具尸体。
B2 noun /ˈkɜːr.tə.si/

Courtesy

礼貌; 客气;
Meaning
the showing of politeness in one's attitude and behavior toward others; a polite gesture or remark
Example
He showed great courtesy by holding the door open for elderly people.
他通过为老年人打开门来表现出极大的礼貌。
B2 verb/noun /ˈsɛnsər/

censor

审查
Meaning
to suppress or remove parts of books, films, or information considered offensive or harmful; a person who does this
Example
The government tried to censor the controversial film.
政府试图审查那部有争议的电影。
B2 noun /ˈsɜːrkɪt/

circuit

电路 / 电气通路
Meaning
A roughly circular line, route, or movement that starts and ends at the same place; also an electrical pathway.
Example
The runners completed the circuit around the park.
跑步者完成了环绕公园的电路。
B2 verb /ˈkærəktəraɪz/

characterize

Meaning
to describe or portray the distinctive features or qualities of someone or something
Example
The author characterizes the hero as brave and selfless.
B2 noun /ˈkɒŋɡrɛs/

congress

大会
Meaning
a formal meeting or assembly, especially of representatives for discussion
Example
The international congress on climate change will be held next year.
关于气候变化的国际大会将在明年举行。
B2 noun/verb /krɪˈtiːk/

critique

批评
Meaning
A detailed analysis and assessment of something, especially a literary, philosophical, or political theory; to evaluate critically.
Example
The professor asked the students to critique each other's essays.
教授要求学生批评彼此的论文。
B2 verb /ˈkʌltɪveɪt/

cultivate

耕种
Meaning
to grow crops or plants; to develop or improve something
Example
Farmers cultivate rice in the paddy fields.
农民在稻田里种植水稻。
B2 adjective ˌkɑː.bən ˈnjuː.trəl

carbon-neutral

碳中和
Meaning
Having a balance between emitting carbon and absorbing carbon from the atmosphere; not adding to overall carbon emissions.
Example
The company aims to be carbon-neutral by 2030.
该公司计划在2030年实现碳中和。
B2 adjective /kəmˈpɛlɪŋ/

compelling

引人注目的
Meaning
Evoking interest, attention, or admiration in a powerful way.
Example
She gave a compelling speech about climate change.
她就气候变化发表了引人注目的演讲。
B2 noun /ˈkreɪvɪŋ/

craving

渴望, 强烈的欲望
Meaning
a strong desire for something
Example
She has a craving for chocolate every evening.
她每晚都渴望吃巧克力。
B2 noun /ˈkrɪstəl/

crystal

水晶
Meaning
a clear, transparent mineral or glass that forms a solid structure with regular patterns
Example
She wore a necklace made of sparkling crystal.
她戴着一条闪闪发光的水晶项链。
B2 adverb /ˈklɒkwaɪz/

Clockwise

顺时针
Meaning
in the direction that clock hands move; in a circular direction from left to right
Example
Turn the valve clockwise to tighten it.
顺时针旋转阀门以拧紧它。
B2 noun /kənˈdʒes.tʃən/

congestion

交通堵塞
Meaning
A situation in which a place is too blocked or crowded, causing difficulties.
Example
Urban congestion leads to longer travel times.
城市交通堵塞导致了更长的旅行时间。
B2 noun ˈkɔːʃən

caution

小心
Meaning
Care taken to avoid danger or mistakes; a warning or piece of advice.
Example
Researchers issued a caution regarding unsustainable fishing.
研究人员就不可持续的捕鱼行为发出了警告。
B2 verb /kreɪv/

crave

渴望, 强烈的欲望
Meaning
to have a strong desire for something
Example
She craves adventure and often travels to remote places.
她渴望冒险，并经常前往偏远的地方。
B2 verb /kənˈtæmɪneɪt/

contaminate

Meaning
To make something impure, dirty, or harmful by contact with a poisonous or polluting substance.
Example
The river was contaminated by industrial waste.
B2 verb /ˈklæsɪfaɪ/

classify

Meaning
to arrange or organize into categories or groups
Example
The librarian classified the books by subject.
B2 noun /kəmˈplɛksɪti/

complexity

复杂性
Meaning
The state of being complex; intricacy.
Example
The complexity of the problem required a team of experts.
问题的复杂性要求一支专家团队。
B2 noun /ˌkɒrəˈleɪʃən/

correlation

相关
Meaning
a mutual relationship or connection between two or more things
Example
Researchers found a strong correlation between diet and heart disease.
研究人员发现饮食与心脏病之间有着强烈的相关性。
B2 adjective ˌkɒntrəˈdɪktəri

contradictory

矛盾的
Meaning
Mutually opposed or inconsistent; containing elements that oppose each other.
Example
Their views on education are contradictory.
他们关于教育的观点是矛盾的。
B2 verb kəˈlæbəreɪt

collaborate

合作
Meaning
To work jointly with others, especially in an intellectual endeavor; cooperate.
Example
Volunteers often collaborate with local organizations.
志愿者经常与当地组织合作。
B2 noun /kraɪˈtɪəriən/

criterion

标准
Meaning
A standard or rule used to make a judgment or decision.
Example
Honesty is an important criterion for this job.
诚实是这份工作的一个重要标准。
B2 noun /ˌkɑːrboʊˈhaɪdreɪt/

carbohydrate

碳水化合物
Meaning
a nutrient that provides energy, found in foods like rice, bread, and sugar
Example
Rice and potatoes are rich in carbohydrates.
米饭和土豆富含碳水化合物。
B2 noun kəˈmɒd.ə.ti

commodity

商品
Meaning
A raw material or primary agricultural product that can be bought and sold.
Example
Oil is a valuable commodity in the global market.
石油是全球市场上有价值的商品。
B2 adjective /kənˈvɪnsɪŋ/

Convincing

令人信服的; 可信的; 有说服力的; 能使某人相信某事的
Meaning
believable; credible; persuasive; able to make someone believe something
Example
His convincing argument won over the entire jury.
他的有说服力的论点赢得了整个陪审团。