couple
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A2 noun /ˈkʌpəl/

couple

一对
Meaning
two people or things considered together; a pair
Example
They make a lovely couple and have been married for five years.
他们是一个可爱的情侣，已经结婚五年了。
B2 noun /ˌkovuːɪɡˈzɪs.təns/

Co-existence

共存
Meaning
the state of existing together at the same time or in the same place; peaceful cohabitation
Example
The peaceful co-existence of different cultures makes this city unique.
不同文化的和平共存使这座城市独一无二。
C1 noun /ˈkɑːmənˌwɛlθ/

commonwealth

英联邦
Meaning
an independent community or state, especially one founded for the common good; also an association of nations
Example
Australia is a member of the Commonwealth of Nations.
澳大利亚是英联邦国家的成员。
C1 adjective /ˌkɒnvəˈlɛsnt/

convalescent

恢复中的，正在从疾病或治疗中恢复
Meaning
recovering from an illness or medical treatment
Example
The hospital has a special ward for convalescent patients.
医院有一个特别的病房，供恢复中的病人使用。
A2 adverb /kəˈrɛktli/

correctly

正确地
Meaning
in a way that is true, accurate, or without mistakes
Example
She answered all the questions correctly.
她正确地回答了所有问题。
C2 noun /kɔˈrɪkə soˈbɔrnə/

Corica soborna

卡奇基鱼
Meaning
a small silvery fish species found in South Asian rivers, commonly used in local cuisine
Example
Corica soborna is a popular ingredient in traditional Bengali fish curry.
科里卡索博尔纳是传统孟加拉鱼咖喱中的一种受欢迎的配料。
C1 adjective /ˈkoʊpiəs/

copious

大量
Meaning
abundant in supply or quantity
Example
She took copious notes during the lecture.
她在讲座期间做了大量笔记。
B1 noun /kəʊst/

Coast

海岸
Meaning
the part of the land near the sea; the edge of the land
Example
We drove along the coast to enjoy the view.
我们沿着海岸开车，享受美景。
C2 noun /ˈkɒn.tjʊ.mə.li/

contumely

侮辱，轻蔑
Meaning
insulting or humiliating treatment
Example
He endured the contumely of his colleagues with patience.
他耐心地忍受了同事们的轻蔑。
B2 noun /ˌkɒndɛnˈseɪʃən/

condensation

冷凝
Meaning
The process of water vapor changing into liquid; also, the act of making something more concise.
Example
Condensation formed on the windows during the cold night.
在寒冷的夜晚，窗户上形成了冷凝。
C1 noun /kənˈkʌrəns/

concurrence

一致
Meaning
Agreement or union in action, opinion, or occurrence; simultaneous happening of events.
Example
The project was completed with the concurrence of all departments.
这个项目是在所有部门的共识下完成的。
A2 noun /ˈsɪɡəˌrɛt/

cigarette

香烟
Meaning
a small roll of finely cut tobacco wrapped in paper for smoking
Example
He lit a cigarette after dinner.
他在晚餐后点燃了一支香烟。
B2 adjective /ˈklæsɪfaɪd/

classified

机密的；分类的
Meaning
arranged into categories; officially secret or restricted
Example
The report contains classified information and cannot be shared publicly.
这份报告包含机密信息。
A1 verb, adjective /kloʊz/ (verb), /kloʊs/ (adjective)

close

关闭，接近
Meaning
To shut something (verb); near in space or relationship (adjective).
Example
Please close the door when you leave.
请在您离开时关门。
A2 noun ˌkɒmpəˈtɪʃən

competition

竞争
Meaning
The activity or condition of competing; rivalry for supremacy.
Example
Competition grew between language groups.
竞争在语言群体之间加剧。
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。
C1 noun/adjective /klɛft/

cleft

裂缝
Meaning
a split or crack; a space or opening made by cleavage
Example
The goat disappeared into a cleft in the rocks.
山羊消失在岩石中的裂缝里。
C1 adjective /ˈtʃɪə.ləs/

Cheerless

沉闷; 沮丧; 悲伤; 无欢乐
Meaning
lacking happiness or comfort; gloomy; depressing; without cheer
Example
The old house looked cheerless and abandoned in the winter rain.
这座老房子在冬雨中看起来显得沉闷和荒废。
B1 noun /tʃiːf/

chief

首领
Meaning
a leader or person in charge of a group or organization
Example
The chief of the village made an important decision.
村庄的首领做出了一个重要的决定。
C1 noun kənˈfɔː.mə.ti

conformity

一致性，遵从，合规
Meaning
Compliance with standards, rules, or laws. Behavior in accordance with socially accepted conventions.
Example
Strict conformity to the rules ensures order in society.
严格遵守规则确保社会秩序。
B2 adjective kəˈləʊ.ni.əl

colonial

殖民的
Meaning
Relating to or characteristic of a colony or colonialism, especially involving the control of one country by another.
Example
Colonial rule suppressed local governance.
殖民统治压制了当地的政府。
C2 adjective /kəˈmɛnʃərət/

commensurate

相称的
Meaning
corresponding in size, degree, or extent; proportionate
Example
Salary will be commensurate with experience.
薪资将与经验相称。
C2 adjective /ˈkreɪvən/

craven

懦夫
Meaning
cowardly; lacking courage
Example
He was too craven to stand up for his beliefs.
他太懦弱，无法捍卫自己的信念。
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。
C2 adjective /kəˈrʌp.tə.bəl/

corruptible

易腐败的
Meaning
able to be morally or ethically corrupted
Example
He was known to be corruptible and often accepted bribes.
他以易腐败的著称，经常接受贿赂。
B2 noun /kroʊ/

Crow

乌鸦
Meaning
a large black bird known for its intelligence and harsh call
Example
The crow cawed loudly from the tree branch.
乌鸦从树枝上大声地叫。
C1 verb /ˈkrɒs.briːd/

crossbreed

杂交
Meaning
to produce an animal or plant by mating two different breeds, varieties, or species
Example
Farmers crossbreed cows to improve milk production.
农民通过交配不同品种的牛来提高奶产量。
A2 noun /ˈkloʊðɪŋ/

clothing

衣服
Meaning
items worn to cover the body; apparel collectively
Example
Warm clothing is essential in winter.
冬天，保暖衣物是必不可少的。
B2 noun /kəˈdɛt/

cadet

军校生
Meaning
A young trainee in the armed forces, police, or other organization.
Example
The cadet marched proudly in the parade.
军校生在游行中自豪地行进。
C1 noun /ʃəˈmiːz/

Chemise

睡裙
Meaning
a woman's loose-fitting undergarment or dress hanging straight from the shoulders
Example
The vintage chemise was made of delicate lace and silk.
这款复古睡裙由精美的蕾丝和丝绸制成。
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。
C1 noun /ˌkɒŋɡrɪˈɡeɪʃən/

congregation

集会
Meaning
a group of people assembled for religious worship or a common purpose
Example
The congregation gathered to hear the sermon.
集会聚集在一起聆听讲道。
B2 noun /ˈtʃeɪmbər/

chamber

房间
Meaning
a large room used for formal or public events, or a private room.
Example
The king held meetings in his private chamber.
国王在他的私人房间里举行会议。
A2 verb /tʃiːt/

cheat

作弊
Meaning
to act dishonestly; to break rules for advantage
Example
He cheats on the exam by copying answers.
他通过抄答案在考试中作弊。
C1 noun /ˈkɑr.nɪdʒ/

Carnage

屠杀
Meaning
the killing of a large number of people; widespread slaughter
Example
The battlefield was filled with carnage after the brutal war.
战争后，战场上充满了大屠杀。
C1 noun kəmˈpleɪ.sən.si

complacency

自满
Meaning
Excessive self-satisfaction with one's achievements that can hinder progress.
Example
His complacency led to a decline in his performance.
他的自满导致了他的表现下降。
C1 verb /ˌkaʊntərˈbæləns/

counterbalance

抵消
Meaning
to offset or balance the effect of something
Example
Exercise can counterbalance the negative effects of stress.
运动可以抵消压力的负面影响。
C2 adjective /sɛnˈsɔːriəs/

censorious

过分挑剔
Meaning
severely critical of others
Example
She was always censorious about her colleagues' mistakes.
她总是对同事们的错误非常挑剔。
A2 noun /ˈkɑr.pɪt/

Carpet

地毯
Meaning
a floor covering made from thick woven fabric
Example
The Persian carpet in the living room was a family heirloom.
客厅里的波斯地毯是家族的传家宝。
B2 noun kəˈmɪʃ.ən

commission

委员会
Meaning
An official group of people entrusted by a government with a particular function.
Example
The commission recommends constitutional reforms.
委员会建议进行宪法改革。
B2 noun /ˈsen.tɪ.piːd/

Centipede

蜈蚣
Meaning
a long thin creature with many legs that lives in dark places
Example
I found a centipede crawling under the rock.
我在石头下发现了一只蜈蚣。
A2 verb /klaɪm/

climb

爬
Meaning
to go up using hands and feet; to ascend
Example
We decided to climb the mountain.
我们决定爬山。
B2 noun ˌkɒn.fɪ.den.ʃiˈæl.ɪ.ti

confidentiality

保密性
Meaning
The state of keeping or being kept secret or private
Example
Confidentiality is crucial in data security.
保密性对数据安全至关重要。
B2 verb /ˈkɒnvɪkt/

convict

判决
Meaning
to find someone guilty of a crime in a court of law
Example
The court convicted him of theft.
法院判定他偷窃有罪。
C2 noun /ˈklɪpər/

clipper

理发器 / 19世纪快速航行的船只
Meaning
a tool used for cutting, or a fast sailing ship of the 19th century
Example
The barber used clippers to trim his hair.
理发师用理发器修剪了他的头发。
C1 adjective /ˈkræfti/

crafty

狡猾的, 精明的, 狡诈的
Meaning
skilled at achieving goals through cunning or deceit; sly
Example
The crafty fox evaded the hunters again.
狡猾的狐狸再次躲过了猎人的追捕。
B2 adjective /ˈkæθəlɪk/

catholic

天主教的
Meaning
Including a wide variety; all-embracing; relating to the Roman Catholic Church.
Example
She has catholic tastes in music, enjoying everything from jazz to opera.
她有天主教的音乐口味，从爵士乐到歌剧都喜欢。
C2 noun /ˌkəʊ.əˈles.əns/

coalescence

聚合, 合并
Meaning
The process of coming together to form one mass or whole.
Example
The coalescence of different cultures creates diversity.
不同文化的结合创造了多样性。
C1 adjective /ˈkɔːʃənˌɛri/

cautionary

警示性的
Meaning
serving as a warning; intended to prevent problems or mistakes by giving advice or examples
Example
The report offers a cautionary message about unchecked spending.
该报告对失控的支出发出了警示性的信息。
C1 noun /ˈkaʊərdɪs/

cowardice

懦弱
Meaning
lack of courage; behavior showing fear
Example
His cowardice prevented him from speaking up.
他的懦弱让他无法发言。
B2 noun/verb /kjuː/

cue

信号
Meaning
A signal or prompt for action; to give a signal.
Example
The actor waited for his cue before entering the stage.
演员在上台前等待他的信号。
A2 noun /ˈkændi/

candy

糖果
Meaning
a sweet food made with sugar or chocolate, often in small pieces
Example
The children were excited to get candy on Halloween.
孩子们在万圣节兴奋地收到糖果。
B1 verb /kənˈfɜːrm/

confirm

确认
Meaning
to establish the truth, accuracy, or validity of something
Example
The hotel will confirm your reservation by email.
酒店将通过电子邮件确认您的预订。
A1 verb /kliːn/

clean

清洁
Meaning
To make something free from dirt, marks, or mess.
Example
She cleaned the kitchen before the guests arrived.
她在客人到来之前清洁了厨房。
A2 noun /ˈkælɪndər/

calendar

日历
Meaning
a system for organizing days, months, and years; a chart showing days of the year
Example
She marked her birthday on the calendar.
她在日历上标记了她的生日。
C2 noun /ˈkɒn.kɔːd/

concord

协议或和谐
Meaning
Agreement or harmony between people or groups.
Example
The leaders worked towards international concord.
领导人们为国际和谐而努力。
A2 noun /ˌkɒnvəˈseɪʃn/

conversation

对话
Meaning
an informal talk between two or more people, in which ideas, feelings, and thoughts are exchanged
Example
We had a long conversation about future plans.
我们就未来的计划进行了长时间的对话。
C2 verb /ˈkɒsɪt/

cosset

宠爱
Meaning
to care for and protect in an overindulgent way
Example
The little girl was cosseted by her grandparents.
小女孩被她的祖父母宠爱着。
B2 verb /kənˈvɜːs/

converse

交谈
Meaning
to have a conversation; to talk together
Example
They conversed about literature for hours.
他们谈了几个小时关于文学。
B1 noun /ˈkwaɪər/

choir

合唱团
Meaning
An organized group of singers, typically performing in church services or concerts.
Example
The choir sang beautifully during the ceremony.
合唱团在仪式中唱得非常美丽。
B1 noun/verb /koʊd/

code

代码
Meaning
a system of words, letters, or symbols used to represent information or instructions
Example
He wrote a code to solve the problem on the computer.
他写了一个代码来解决电脑上的问题。
A2 adverb /ˈklɪrli/

clearly

清楚地
Meaning
In a way that is easy to perceive, understand, or see.
Example
She spoke clearly so that everyone could understand.
她清楚地说话，以便每个人都能理解。
B2 adjective /kəˈmɛndəbl̩/

commendable

值得称赞的
Meaning
deserving praise or approval
Example
Her dedication to the project was truly commendable.
她对项目的奉献精神真的值得称赞。
C1 adjective /ˌser.ɪˈmoʊ.ni.əl/

Ceremonial

仪式的
Meaning
relating to or used in ceremonies; formal and ritualistic
Example
The ceremonial dress was worn during the royal wedding.
在皇家婚礼上穿的就是仪式性的服装。
B2 noun /kənˈdʌktər/

conductor

指挥 / 导电材料
Meaning
a person who directs a performance or someone who collects fares on public transport; or a material that conducts electricity
Example
The conductor waved his baton to start the orchestra.
指挥挥动他的指挥棒开始了乐团的演奏。
A2 verb /kræʃ/

crash

幸福
Meaning
To collide violently; to suddenly stop working (for machines or computers).
Example
The car crashed into the wall at high speed.
她在获得奖项时无法掩饰自己的幸福。
B2 noun ˌkɒn.stɪˈtjuː.ʃən

constitution

宪法
Meaning
A body of fundamental principles or established precedents according to which a state is governed.
Example
Constitutional reforms ensure equity.
宪法改革确保公平。
C1 noun /kæpˈtɪv.ɪ.ti/

Captivity

禁锢
Meaning
the condition of being imprisoned or confined
Example
After years of captivity, the prisoner was finally released.
经过多年的禁锢，囚犯终于被释放。
C2 verb /kəˈnoʊt/

connote

暗示
Meaning
To suggest or imply an additional meaning beyond the literal one.
Example
The word 'youthful' connotes energy and vitality.
‘青春’一词暗示着活力和生气。
C1 adverb kəmˈpæktli

compactly

紧凑地
Meaning
In a closely packed or dense manner.
Example
Protons and neutrons are compactly arranged.
质子和中子紧密地排列。
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。
A1 verb /ˈkæri/

carry

携带
Meaning
To support and move something or someone from one place to another.
Example
She carried the bag across the street.
她把包从街对面带了过来。
C1 adjective /ˈkʌlpəbl̩/

culpable

有罪的
Meaning
deserving blame or responsibility for a wrongdoing
Example
The judge found him culpable for the accident.
法官认定他对事故负有责任。
C2 noun /ˈkɒɡneɪt/

cognate

同源词
Meaning
a word related to another word in origin; having the same linguistic root
Example
The Spanish word 'madre' and the English word 'mother' are cognates.
西班牙语单词'madre'和英语单词'mother'是同源词。
C2 noun /ˈtʃænsəri/

chancery

大法官法院
Meaning
A court of equity or the office of a chancellor.
Example
The case was taken to the chancery court for resolution.
此案件已提交至大法官法院以求解决。
C1 adjective/noun /ˈkɜːrsɪv/

cursive

斜体字
Meaning
Written with characters joined together in a flowing manner.
Example
The teacher asked students to write the essay in cursive handwriting.
老师让学生用斜体字写作文。
B2 noun /ˌklærɪfɪˈkeɪʃən/

clarification

澄清
Meaning
The action of making a statement or situation less confused and more clearly comprehensible.
Example
The manager requested clarification on the project details.
经理要求对项目细节进行澄清。
C1 adjective /ˈkɒɡ.nɪ.zənt/

cognizant

意识到
Meaning
Having knowledge or being aware of something.
Example
He was cognizant of the risks before starting the project.
他在开始这个项目之前就意识到风险。
C2 adjective /kənˈvɜːrsənt/

conversant

熟悉，精通
Meaning
familiar with or knowledgeable about something
Example
She is conversant with the latest developments in technology.
她熟悉最新的技术发展。
B1 noun ˌkriː.eɪˈtɪv.ɪ.ti

creativity

创造力
Meaning
The ability to use imagination to produce original ideas or to make something new or imaginative.
Example
His creativity was evident in his artwork.
他的创造力在他的艺术作品中显而易见。
A2 verb /ˈkʌvər/

cover

覆盖
Meaning
to put something over or upon something else to protect or conceal
Example
Please cover the food to keep it fresh.
请把食物盖上，以保持新鲜。
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。
B1 noun /ˌkæl.kjəˈleɪ.ʃən/

Calculation

计算
Meaning
a mathematical determination of the size or number of something
Example
His calculation of the total cost was accurate to the penny.
他的总成本计算准确到分。
B1 noun /ˈsɛrəˌmoʊni/

ceremony

Meaning
A formal event or occasion, often with rituals and traditions.
Example
The graduation ceremony was held in the university hall.
A2 adjective /ˈkʌlərfəl/

colorful

五彩缤纷
Meaning
having bright colors; full of variety or interest
Example
The festival was full of colorful decorations.
这个节日充满了五彩缤纷的装饰。
B2 noun /ˈkʌt.lət/

Cutlet

炸肉饼
Meaning
a small piece of meat, especially veal or lamb, for frying or grilling
Example
She served delicious chicken cutlets for dinner.
她为晚餐提供了美味的炸鸡肉饼。
B2 verb /kəmˈpaɪl/

compile

编制
Meaning
to collect information or material and put it together in a list, report, or book
Example
She compiled the research data into a detailed report.
她将研究数据编纂成一份详细报告。
C1 adjective /kənˈsɛntrɪk/

concentric

同心的
Meaning
having a common center, as in circles or spheres
Example
The artist drew concentric circles on the canvas.
艺术家在画布上画了同心圆。
C1 noun /kənˈsep.ʃən/

Conception

构思; 想法; 受精
Meaning
the forming of an idea or plan; the fertilization of an ovum by a sperm; the action of conceiving
Example
The conception of this innovative project took several months of brainstorming.
这个创新项目的构思花费了几个月的头脑风暴。
C2 adjective /ˈkælkjʊləbl/

calculable

可计算的
Meaning
Capable of being calculated, estimated, or measured.
Example
The risk involved in the project is calculable.
项目中的风险是可以计算的。
C1 noun /ˈkʌˈs.tə.di/

Custody

监护; 拘留; 保护
Meaning
the protective care or guardianship of someone or something; imprisonment or detention
Example
After the divorce, they shared custody of their children equally.
离婚后，他们平等地分享了孩子的监护权。
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。
C2 noun, adjective /klɛərˈvɔɪənt/

clairvoyant

Meaning
a person who claims to have clairvoyance; having the ability to see beyond normal senses
Example
The clairvoyant predicted that she would travel abroad soon.
B1 adjective ˈkrɪtɪkəl

critical

关键的
Meaning
Extremely important; at a point of crisis or urgency.
Example
Addressing critical issues in education is imperative.
解决教育中的关键问题是至关重要的。
C1 adjective /koʊˈɜːrsɪv/

coercive

强制性
Meaning
Relating to or using force or threats to make someone do something.
Example
The government faced criticism for adopting coercive measures against protestors.
政府因采用对抗议者的强制性措施而遭到批评。
C2 noun /ˈkriːdoʊ/

credo

信条
Meaning
A statement of the beliefs or aims that guide someone's actions.
Example
Honesty has always been the central credo of his life.
诚实一直是他生活中的核心信条。
C2 verb /ˈkʌzən/

cozen

欺骗，诈骗
Meaning
to deceive, cheat, or trick someone
Example
He cozened the old man out of his money.
他欺骗了老人并夺走了他的錢。
B1 noun /kɒp/

cop

警察
Meaning
a police officer (informal)
Example
The cop stopped the car for speeding.
警察因超速而拦下了那辆车。
C2 noun /ˈʃɛvrən/

chevron

V形符号
Meaning
A V-shaped pattern, often used in military insignia or design.
Example
The sergeant’s uniform displayed three chevrons on the sleeve.
军士的制服上显示了三条雪佛龙标记。
C1 verb /ˈkrɪsən/

christen

命名
Meaning
to give a name to someone at baptism or to name something officially
Example
They christened the ship after the queen.
他们为船命名，以女王的名字。
B1 noun /tʃɪl/

Chill

寒冷; 恐惧或焦虑的感觉; 放松
Meaning
an unpleasant feeling of coldness; a feeling of fear or anxiety; to relax
Example
There was a chill in the air as autumn approached.
当秋天临近时，空气中感到一阵寒冷。
C1 noun kəˈlɛktɪvɪzəm

collectivism

集体主义
Meaning
The practice or principle of giving a group priority over each individual in it.
Example
Collectivism emphasizes the importance of group over individual interests.
集体主义强调集体利益高于个人利益。
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 /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。
C1 noun /kənˈvʌl.ʃən/

convulsion

抽搐
Meaning
a sudden, violent, involuntary contraction of muscles; a seizure
Example
The medicine helped prevent convulsions in children.
药物帮助预防儿童的抽搐。
A2 noun /ˈsen.tʃər.i/

Century

世纪; 百年
Meaning
a period of one hundred years; a score of one hundred in cricket
Example
The ancient castle has stood for more than five centuries.
这座古老的城堡已经屹立了五个世纪。
A1 verb, noun /kraɪ/

cry

Meaning
To shed tears as an expression of emotion such as sadness or pain; also a loud call or shout.
Example
The baby began to cry when she was hungry.
B2 noun ক্লাইম্যাটিক কন্ডিশন্স

climatic conditions

气候条件
Meaning
The atmospheric or weather patterns of a particular region.
Example
Specific climatic conditions are required for snowfall.
降雪需要特定的气候条件。
C1 noun /ˈkɑːrtrɪdʒ/

cartridge

墨盒
Meaning
A container holding a substance or device, such as ink for printers or bullets for firearms.
Example
The printer stopped working because the ink cartridge was empty.
打印机停止工作，因为墨盒已空。
B1 noun /ˈkɒtən/

cotton

幸福
Meaning
A soft white fibrous substance used to make cloth and thread.
Example
This shirt is made of pure cotton.
当她收到奖项时，她无法掩饰自己的幸福。
B1 noun /ˈsiːlɪŋ/

ceiling

天花板
Meaning
the upper interior surface of a room
Example
The ceiling of the hall was painted beautifully.
大厅的天花板被美丽地油漆了。
B2 adjective /ˈkɔːstli/

costly

昂贵
Meaning
expensive or causing a lot of money, time, or effort
Example
Their mistake proved to be very costly for the company.
他们的错误证明对公司来说是非常昂贵的。
B2 noun /kənˈsɛʃən/

concession

让步
Meaning
something that is granted, especially in response to demands; a compromise
Example
The company made several concessions during the negotiations.
公司在谈判中做出了几次让步。
A2 noun /keɪdʒ/

Cage

笼子
Meaning
a structure with bars or wire for keeping birds or animals
Example
The parrot lives in a large cage.
鹦鹉生活在一个大笼子里。
C2 noun /kəˈkɒfəni/

cacophony

刺耳的噪音
Meaning
A harsh, discordant mixture of sounds.
Example
The cacophony of horns made it impossible to concentrate.
喇叭的刺耳声音使人无法集中注意力。
B1 noun /sɛl/

cell

细胞 / 单元格
Meaning
a small basic unit of life; or a small enclosed space like a prison room
Example
The prisoner was locked in a small cell.
囚犯被锁在一个小牢房里。
A2 verb ˈselɪbreɪt

celebrate

庆祝
Meaning
To acknowledge a significant or happy day or event with a social gathering or enjoyable activity.
Example
Bangladesh celebrates Urban Planning Day on November 8.
中国庆祝国庆节，日期是10月1日。
B1 verb /ˈkrɪtɪsaɪz/

criticize

批评
Meaning
to express disapproval or find fault with someone or something
Example
The teacher criticized the student's poor handwriting.
老师批评了学生的糟糕字迹。
C2 adjective /ˈkoʊməˌtoʊs/

comatose

昏迷的
Meaning
In a state of deep unconsciousness, resembling or related to coma.
Example
The comatose patient was kept under constant observation.
昏迷的病人被持续观察。
A1 noun /koʊld drɪŋk/

Cold drink

冷饮
Meaning
A chilled beverage; a refreshing drink served cold
Example
I ordered a cold drink to beat the summer heat.
我点了一杯冷饮来缓解夏天的热度。
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。