centrifuge
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C1 noun /ˈsɛntrɪˌfjuːdʒ/

centrifuge

离心机
Meaning
A machine that spins substances at high speed to separate different components.
Example
The lab technician used a centrifuge to separate the blood cells from the plasma.
实验室技术员使用离心机将血细胞从血浆中分离出来。
C1 noun /kuːp/

coop

鸡或其他鸟类的一个小围栏或笼子
Meaning
a small enclosure or cage for chickens or other birds
Example
The farmer checked the chickens in the coop every morning.
农民每天早上检查鸡舍里的鸡。
C1 adjective /ˈkɔː.stɪk/

caustic

腐蚀性的, 尖刻的
Meaning
able to burn or corrode by chemical action; severely sarcastic
Example
Her caustic remarks hurt his feelings.
她尖刻的评论伤害了他的感情。
C1 verb /kəˈrəʊd/

corrode

腐蚀
Meaning
to gradually destroy or wear away metal or other materials through chemical action
Example
The iron pipes corroded over time due to exposure to water.
铁管因暴露在水中而随着时间的推移而腐蚀。
C1 noun /kəmˈprɛʃn̩/

compression

压缩
Meaning
The act of pressing or squeezing something into a smaller space.
Example
File compression helps reduce storage requirements.
文件压缩有助于减少存储需求。
C1 noun sɜːrˈkeɪdiən ˈrɪðəm

circadian rhythm

生物钟
Meaning
The body's natural sleep-wake cycle that occurs within 24 hours
Example
Exposure to natural light regulates the circadian rhythm.
暴露在自然光下会调节生物钟。
C1 noun /ˈtʃæriət/

Chariot

战车
Meaning
an ancient horse-drawn vehicle used in warfare and racing
Example
The warrior rode his chariot into battle with great courage.
战士带着他的战车勇敢地冲向了战斗。
C1 noun /ˈkɒlərə/

cholera

Meaning
An infectious disease of the small intestine causing severe vomiting and diarrhea.
Example
The village suffered an outbreak of cholera after the flood.
C1 noun /kəˈnɛəri/

canary

金丝雀
Meaning
a small, usually yellow bird known for its singing; also used as a warning sign in dangerous conditions
Example
The canary sang beautifully in its cage.
金丝雀在它的笼子里唱得非常动听。
C1 noun /ˈtʃɪz.əl/

Chisel

凿子
Meaning
a tool with a sharp flat edge used for cutting or shaping wood, stone, or metal
Example
The carpenter used a chisel to carve the wood.
木匠用凿子雕刻木头。
C1 noun kɒɡˈnɪʃ.ən

cognition

认知
Meaning
The mental action or process of acquiring knowledge and understanding through thought, experience, and the senses.
Example
Cognition plays a key role in learning.
认知在学习中起着关键作用。
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。
C1 noun /kəˈpɪl.ər.iz/

capillaries

毛细血管
Meaning
Any of the fine branching blood vessels that form a network between the arterioles and venules.
Example
Broken capillaries cause dark circles.
破裂的毛细血管导致黑眼圈。
C1 adjective/verb /ˈkɒn.sə.mət/

consummate

以极大的技巧完成或完善某物
Meaning
To complete or perfect something with great skill
Example
He is a consummate artist with years of experience.
他是一个技艺精湛的艺术家，拥有多年的经验。
C1 noun kəˈlæt.ər.əl

collateral

作为贷款担保的财产
Meaning
Something pledged as security for repayment of a loan, to be forfeited in the event of a default.
Example
The bank requires collateral for loan approval.
银行要求贷款批准时提供担保物品。
C1 noun /kəˈmɪtl̩/

committal

监禁 / 扣押
Meaning
The action of sending a person to prison or a mental hospital; also the act of committing something to a particular place.
Example
The judge ordered the committal of the accused to custody.
法官命令将被告送入拘留。
C1 noun kənˈvɜː.dʒəns

convergence

汇聚
Meaning
The process of coming together from different directions to meet at a common point; unification or integration.
Example
The convergence of technologies is revolutionizing industries.
技术的汇聚正在革命化行业。
C1 adjective sɪˈlɛstʃəl

celestial

天体
Meaning
Positioned in or relating to the sky, or outer space as observed in astronomy.
Example
The celestial bodies in the sky were clearly visible last night.
天空中的天体在昨晚清晰可见。
C1 adjective /kəmˈpʌlsɪv/

compulsive

强迫的
Meaning
Resulting from or acting on an irresistible urge, especially one that is against one's conscious wishes.
Example
He is a compulsive gambler who cannot stop placing bets.
他是一个强迫症赌博者，无法停止下赌注。
C1 noun /kəˈres/

Caress

抚摸
Meaning
a gentle or loving touch
Example
The mother's gentle caress calmed the crying baby.
母亲温柔的抚摸使哭泣的婴儿平静下来。
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。
C1 verb /kənˈviːn/

convene

集合，召集会议或集会
Meaning
to come together or assemble, especially for a meeting or formal gathering
Example
The board will convene tomorrow to discuss the new policy.
董事会将在明天召开，讨论新的政策。
C1 noun kəˈrəʊ.ʒən

corrosion

腐蚀
Meaning
The gradual destruction of materials by chemical or electrochemical reaction, especially of metals by oxidation.
Example
Corrosion in pipes leads to leakage.
管道中的腐蚀导致泄漏。
C1 noun /kənˈtɪnjuəm/

continuum

连续体
Meaning
A continuous sequence in which adjacent elements are not perceptibly different from each other, but the extremes are quite distinct.
Example
Life and death are often seen as part of the same continuum.
生与死常常被视为同一连续体的一部分。
C1 noun /sɛˈseɪʃən/

cessation

停止
Meaning
The fact or process of ending or being brought to an end.
Example
There was a temporary cessation of hostilities.
敌对行动暂时停止。
C1 adjective /kənˈkluː.sɪv/

Conclusive

决定性的; 终结的; 完全解决问题
Meaning
final; decisive; settling a matter completely
Example
The evidence was conclusive and left no room for doubt.
证据是决定性的，没有留下任何怀疑的空间。
C1 noun, adjective /ˈsɛntənəri/ or /sɛnˈtɛnəri/

centenary

百年纪念
Meaning
The hundredth anniversary of a significant event; relating to a period of 100 years.
Example
The school celebrated its centenary with a grand event.
学校以一场盛大的活动庆祝了它的百年纪念。
C1 noun /ˈkɒnɪfər/

conifer

针叶树
Meaning
a type of tree that bears cones and evergreen needle-like leaves, such as pine or fir
Example
The forest is dominated by conifers like pine and spruce.
森林由松树和云杉等针叶树主导。
C1 adjective ˈklaɪ.mət rɪˈzɪl.i.ənt

climate-resilient

气候适应性强
Meaning
Able to cope with the adverse effects of climate change; sustainable and adaptable.
Example
Climate-resilient crops can survive extreme weather conditions.
气候适应性强的作物能够在极端天气条件下生存。
C1 noun /ˈkaʊn.tə.nəns/

countenance

面容，表情；支持
Meaning
a person's face or expression; support or approval
Example
Her cheerful countenance brightened the room.
她那愉快的面容照亮了房间。
C1 adjective kənˈkɝː.ənt

concurrent

同时发生的，平行的，在同一时间进行的
Meaning
Existing, happening, or done at the same time.
Example
The conference had concurrent sessions on various topics.
会议期间有多个并行的主题会议。
C1 verb /kəmˈprɛs/

compress

压缩
Meaning
to press or squeeze something so that it becomes smaller
Example
The file was compressed to save storage space.
文件被压缩以节省存储空间。
C1 verb /ˈkrʌmpəl/

crumple

揉捏
Meaning
to crush something into folds or wrinkles
Example
He crumpled the paper and threw it in the bin.
他把纸揉成一团丢进了垃圾桶。
C1 noun ˈkeɪ.dəns

cadence

语音的节奏和升降调
Meaning
The rhythm and flow of speech with rise and fall in tone.
Example
His speech had a natural cadence that captivated the audience.
他的演讲有一种自然的节奏，吸引了观众。
C1 noun/verb /ˈkætəpʌlt/

catapult

弹射器
Meaning
A device for launching objects at high speed; to hurl or launch something suddenly.
Example
The invention catapulted him to international fame.
发明将他弹射到国际声誉。
C1 noun kənˈsjuː.mə.rɪ.zəm

consumerism

消费主义
Meaning
The tendency to increase consumption of goods and the importance given to consuming products.
Example
Modern consumerism leads to increased demand for luxury goods.
现代消费主义导致对奢侈品的需求增加。
C1 noun /ˌkʌl də ˈsæk/

cul de sac

死胡同
Meaning
A street or passage closed at one end; a dead end.
Example
They bought a house at the end of a quiet cul de sac.
他们在一个安静的死胡同的尽头买了一栋房子。
C1 noun /tʃɪt/

Chit

便条, 紙條
Meaning
a short note, typically a brief informal letter; a voucher for a sum owed
Example
She left a chit on the table asking him to call her back.
她在桌子上留了一张纸条，要求他回电。
C1 noun/verb /ˈsaɪ.fər/

cipher

密码
Meaning
A secret or disguised way of writing; a code; to put a message into secret writing.
Example
Military messages are protected using a cipher.
军事消息通过密码保护。
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。
C1 noun /ˈkændɪdnəs/

candidness

坦率
Meaning
The quality of being open, honest, and straightforward
Example
Her candidness during the meeting impressed everyone.
她在会议中的坦率给大家留下了深刻的印象。
C1 verb /kraʊtʃ/

crouch

Meaning
to bend your knees and lower your body close to the ground
Example
The cat crouched before leaping at its prey.
C1 noun /ˈkɒmən kɑːp/

Common Carp

鲤鱼
Meaning
A large freshwater fish widely cultivated for food
Example
Common carp is an important fish in aquaculture.
鲤鱼是水产养殖中的重要鱼类。
C1 noun kəˈmjunəl ˈhɑrməni

communal harmony

社区和谐
Meaning
Peaceful coexistence and cooperation among different groups in a community.
Example
Maintaining communal harmony requires mutual respect and understanding.
维护社区和谐需要相互尊重和理解。
C1 verb /kənˈspaɪər/

conspire

密谋
Meaning
to secretly plan with others to do something harmful or illegal
Example
They conspired to overthrow the government.
他们密谋推翻政府。
C1 verb /kriːk/

creak

发出高音尖锐的吱吱声
Meaning
to make a high-pitched, squeaking noise when moved
Example
The old door creaked as she opened it.
那扇旧门在她打开时发出了咯吱声。
C1 noun /ˈkɒnstənsi/

constancy

忠诚/恒常
Meaning
the quality of being faithful and dependable
Example
Her constancy in friendship is admirable.
她在友谊中的恒常令人钦佩。
C1 noun /ˈkɒndɪmənts/

condiments

调味品或酱料
Meaning
Seasonings or sauces used to add flavor to food.
Example
Ketchup and mustard are popular condiments for burgers.
番茄酱和芥末是汉堡的常见调味品。
C1 noun /ˌkɒn.stəˈleɪ.ʃən/

constellation

星座
Meaning
a group of stars forming a recognizable pattern in the night sky
Example
Orion is one of the most famous constellations.
猎户座是最著名的星座之一。
C1 verb /klæsp/

clasp

抓住 / 扣子
Meaning
to grasp or hold tightly; also a device for fastening
Example
She clasped her hands together in prayer.
她在祈祷时将手紧紧地握在一起。
C1 adjective /kənˈdʒenɪtl/

congenital

先天的
Meaning
existing from birth, usually describing a disease or condition
Example
The child was born with a congenital heart defect.
这个孩子出生时就有先天性心脏缺陷。
C1 adjective kəʊˈhiː.sɪv

cohesive

凝聚力强
Meaning
Characterized by or causing cohesion; forming a united whole.
Example
The team displayed a cohesive strategy.
团队展示了一个凝聚力强的战略。
C1 noun /krʌst/

crust

外壳
Meaning
the hard outer surface of something, especially bread or the Earth's outer layer
Example
He cut off the crust of the bread before eating.
他在吃之前切去了面包的外壳。
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。
C1 noun /ˈkɒnsjʊlət/

consulate

领事馆
Meaning
the building or office where a consul works
Example
He went to the consulate to renew his visa.
他去了领事馆续签他的签证。
C1 adjective /kɔɪ/

coy

害羞的, 内向的
Meaning
reluctant to give details or reveal feelings; shy or reserved
Example
She gave a coy smile when asked about her plans.
当被问及她的计划时，她露出了一丝害羞的微笑。
C1 adjective /ˈtʃɛkərd/

chequered

棋盘格的
Meaning
Having a pattern of squares, or marked by varied and contrasting experiences or periods.
Example
He had a chequered career with both great successes and failures.
他有一段棋盘格的职业生涯，既有巨大的成功，也有失败。
C1 noun /ˈtʃænsələr/

chancellor

校长 / 总理
Meaning
A senior state or legal official, or the head of a university.
Example
The chancellor delivered an inspiring speech at the graduation ceremony.
校长在毕业典礼上发表了鼓舞人心的演讲。
C1 noun ˈkɒnfluəns

confluence

汇流
Meaning
An act or process of merging.
Example
The confluence of ideas from different cultures created a rich discussion.
来自不同文化的思想汇流，创造了一场丰富的讨论。
C1 noun /krəˈʃɛndoʊ/

crescendo

声音逐渐增强
Meaning
a gradual increase in loudness or intensity, especially in music
Example
The orchestra built to a powerful crescendo before the finale.
乐队在结尾前逐渐增强了强烈的高潮。
C1 noun /ˈkɒndjuɪt/ or /ˈkɑːnduɪt/

conduit

管道 / 媒介
Meaning
a channel or pipe for conveying water, electricity, or information
Example
The cable was placed inside a protective conduit.
电缆被放入保护管道中。
C1 noun /ˈkɑːrdəməm/

Cardamom

豆蔻
Meaning
aromatic seeds from a plant in the ginger family, used as a spice
Example
The recipe calls for a pinch of ground cardamom.
食谱中需要一撮磨碎的豆蔻。
C1 noun /ˈkɜːrfjuː/

curfew

宵禁
Meaning
a rule requiring people to stay indoors after a certain time, usually at night
Example
The city imposed a curfew during the unrest.
城市在骚乱期间实施了宵禁。
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。
C1 noun /kæʃ/

cache

缓存
Meaning
A hidden storage of items or a high-speed memory in computing.
Example
The hikers found a cache of supplies hidden under the rocks.
远足者在岩石下发现了一个隐藏的物资存储。
C1 adjective /kənˈtɛmptəbl/

contemptible

可鄙的, 令人厌恶的
Meaning
deserving of contempt; despicable
Example
His deceitful actions were truly contemptible.
他的欺骗行为真是可鄙的。
C1 adjective /ˈkrɛdɪtəbl/

creditable

值得称赞
Meaning
Deserving praise or acknowledgment, though not necessarily outstanding.
Example
She made a creditable effort in completing the project on time.
她做出了值得称赞的努力，按时完成了项目。
C1 adjective /kəˈmɛmərətɪv/

commemorative

纪念的
Meaning
Serving as a reminder or in honor of a person or event.
Example
They issued a commemorative coin for the independence anniversary.
他们发行了一枚纪念币，庆祝独立纪念日。
C1 noun /kənˈdəʊləns/

condolence

慰问
Meaning
An expression of sympathy, especially on the occasion of death.
Example
She offered her sincere condolence to the grieving family.
她向悲痛的家庭表示了最真诚的慰问。
C1 noun /ˈkleɪmənt/

claimant

索赔人
Meaning
a person who makes a claim, especially in a legal or financial context
Example
The claimant filed for compensation after the accident.
索赔人事故后申请赔偿。
C1 noun /kənˈfɔːrmɪst/

conformist

盲从者
Meaning
A person who uncritically conforms to established practices or standards.
Example
She was labeled a conformist for always following the crowd.
她因为总是跟随人群而被贴上了盲从者的标签。
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。
C1 noun /kəˈloʊkwiəˌlɪzəm/

colloquialism

口语表达
Meaning
a word or phrase used in informal speech or writing
Example
The novel is full of regional colloquialisms.
这本小说充满了地区性的口语表达。
C1 noun /ˈkæn.dɚ/

candor

坦诚
Meaning
The quality of being open, honest, and straightforward in speech or expression.
Example
She spoke with candor about the challenges she faced.
她坦诚地谈论了她面临的挑战。
C1 noun sɪˈmɛntɪd ɡreɪv

cemented grave

水泥墓
Meaning
A grave that is constructed with cement for permanence.
Example
The cemented grave of the martyrs was seen near the river.
烈士的水泥墓被看见在河边。
C1 adjective /kənˈtɛmptʃuəs/

contemptuous

轻蔑的, 鄙视的
Meaning
showing or expressing contempt; scornful
Example
She gave him a contemptuous glance.
她给了他一个轻蔑的眼神。
C1 adjective /ˈkæni/

canny

精明
Meaning
Having good judgment, especially in business or practical matters; shrewd.
Example
She made a canny investment in real estate.
她在房地产方面做出了精明的投资。
C1 adjective ˈkrɪp.tɪk

cryptic

神秘的, 隐晦的, 模糊的
Meaning
Having a meaning that is mysterious or obscure; difficult to understand.
Example
The message was cryptic and hard to decipher.
消息是神秘的，很难解读。
C1 adjective /ˈkɔːrəl/

choral

与合唱团相关
Meaning
Relating to, written for, or performed by a choir or chorus.
Example
The church hosted a choral performance on Sunday.
教堂在周日举办了合唱表演。
C1 noun /ˈklɛmənsi/

clemency

宽恕
Meaning
mercy, leniency, or forgiveness shown towards someone
Example
The judge showed clemency and reduced his sentence.
法官表现出宽恕，减少了他的判决。
C1 verb /tʃæsˈtaɪz/

chastise

Meaning
to criticize or punish severely
Example
The teacher chastised the student for being late.
C1 noun /ˈkɒnsəl/

consul

领事 / 大使
Meaning
an official appointed by a government to live in a foreign city and protect its citizens and interests there
Example
The consul assisted travelers who lost their passports.
领事帮助了那些丢失护照的旅行者。
C1 noun /ˌkɒndʒʊˈɡeɪʃən/

conjugation

词形变化
Meaning
the variation of the form of a verb to indicate tense, person, and number
Example
French verbs have complex conjugations.
法语动词有复杂的变位。
C1 noun /krɪpt/

crypt

墓室
Meaning
an underground chamber, especially one beneath a church, used as a burial place
Example
The tourists explored the ancient crypt beneath the cathedral.
游客们探索了大教堂下的古老地下室。
C1 adjective /ˈkɒnvɛks/

convex

凸的，向外弯曲的
Meaning
curved or rounded outward
Example
The lens has a convex shape to focus light.
该镜片具有凸形状以聚焦光线。
C1 adjective /kəmˈplɪsɪt/

complicit

共犯 (犯罪中)
Meaning
involved with others in an illegal activity or wrongdoing
Example
He was found complicit in the crime.
他在犯罪中被发现是共犯。
C1 verb /tʃɑːr/

char

烧焦
Meaning
To burn or scorch something so that it becomes blackened.
Example
The cook accidentally charred the steak.
厨师不小心烧焦了牛排。
C1 adjective /kənˈspɪkjuəs/

conspicuous

显眼的
Meaning
Easily noticeable; attracting attention due to being unusual or prominent.
Example
Her red dress made her conspicuous at the party.
她的红色裙子使她在派对上显眼。
C1 noun /ˈkɔːrdən/

cordon

警戒线
Meaning
a line or circle of police, soldiers, or guards preventing access
Example
The police set up a cordon around the crime scene.
警方在犯罪现场周围设立了封锁线。
C1 adjective /ˌkɒnsɪˈkwɛnʃəl/

consequential

重要的
Meaning
Having important or significant consequences; resulting from something.
Example
The meeting was consequential for the future of the project.
这次会议对项目的未来至关重要。
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。
C1 verb /ˈkʌvət/

covet

渴望
Meaning
to desire something belonging to someone else
Example
He coveted his neighbor's new car.
他渴望邻居的新车。
C1 adjective /kəˈrəʊsɪv/

corrosive

腐蚀性，损害
Meaning
tending to cause corrosion; harmful or destructive to materials or people
Example
The chemical is highly corrosive and should be handled with care.
该化学物质具有高度的腐蚀性，应该小心处理。
C1 noun /ˌkɒn.əˈsɜːr/

connoisseur

行家
Meaning
an expert judge in matters of taste, especially in food, art, or wine
Example
She is a true connoisseur of fine art.
她是美术的真正行家。
C1 verb /koʊks/

coax

劝说
Meaning
to persuade someone gently or gradually to do something
Example
She managed to coax the cat out of the tree with some food.
她设法用一些食物把猫从树上劝下来。
C1 adjective /kəˈnɒnɪkəl/

canonical

典范的 / 被接受的
Meaning
Conforming to a general rule or accepted standard; officially recognized.
Example
Shakespeare’s works are considered canonical in English literature.
莎士比亚的作品在英语文学中被认为是典范的。
C1 verb /ˈkɒr.ə.leɪt/

correlate

建立关系
Meaning
To have a mutual relationship or connection; to establish a relationship between two or more things.
Example
Researchers found that diet and mental health correlate strongly.
研究人员发现饮食和心理健康之间有强烈的相关性。
C1 verb /ˈkɒŋɡrɪɡeɪt/

congregate

聚集, 集合
Meaning
to gather together in a group; to assemble
Example
People congregate in the town square every evening.
人们每天晚上都会在市中心的广场上聚集。
C1 verb /siːd/

cede

放弃
Meaning
to give up power, territory, or rights to another
Example
The country ceded territory after losing the war.
这个国家在输了战争后，放弃了领土。
C1 adjective /kənˈsɜːrtɪd/

concerted

协调的
Meaning
done with great effort, planned and performed together by multiple people
Example
The workers made a concerted effort to improve conditions.
工人们为改善条件做出了协调的努力。
C1 noun /ˌkɒnstəˈneɪʃən/

consternation

惊愕
Meaning
A feeling of anxiety, dismay, or confusion, often caused by something unexpected.
Example
The sudden announcement caused widespread consternation among the employees.
突如其来的宣布在员工中引起了广泛的惊愕
C1 adjective /kənˈsɪliətɔːri/

conciliatory

调解的
Meaning
intended to make someone less angry or more agreeable; soothing
Example
She spoke in a conciliatory tone to ease the tension.
她以调解的语气说话，以缓解紧张气氛。
C1 adjective /kənˈɡrɛʃənl/

congressional

国会的
Meaning
relating to a congress, especially the US Congress
Example
The bill received strong congressional support.
该法案获得了强烈的国会支持。
C1 noun, verb /kriːs/

crease

褶皱, 折痕
Meaning
a line or fold produced on paper, cloth, or other material; to make a fold or wrinkle
Example
She ironed the shirt carefully to remove every crease.
她小心地熨烫衬衫，去除每一道褶皱。
C1 noun /ˈkærət/

carat

宝石重量单位
Meaning
a unit of weight for precious stones, equal to 200 milligrams
Example
She received a two-carat diamond ring for her engagement.
她收到了一个两克拉的钻石戒指作为订婚礼物。
C1 adjective /ˈkoʊvərt/

covert

秘密
Meaning
hidden, secret, or not openly acknowledged
Example
The spy conducted a covert operation behind enemy lines.
间谍在敌人的线背后进行了一项秘密行动。
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。
C1 adjective /kɜːrt/

curt

简短
Meaning
Rudely brief in speech or manner.
Example
His curt reply made everyone uncomfortable.
他的简短回答让每个人都感到不舒服。
C1 verb /kənˈsɛptʃuəlaɪz/

conceptualize

构思
Meaning
to form an idea or concept of something in your mind
Example
The artist conceptualized a new design for the exhibition.
艺术家为展览构思了一个新的设计。
C1 adjective /ˈkɑːr.di.æk/

cardiac

心脏的
Meaning
Relating to the heart.
Example
The patient was admitted with a cardiac condition.
病人因心脏病情被收治。
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。
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 adjective /kənˈteɪ.dʒəs/

Contagious

传染性; 有感染力
Meaning
likely to spread to and affect others; infectious
Example
Her laughter is contagious and makes everyone smile.
她的笑声具有传染性，让每个人都微笑。
C1 verb /kənˈstruː/

construe

解释
Meaning
to interpret or understand the meaning of something in a particular way
Example
His words could be construed as a threat.
他的话可以被理解为威胁。
C1 noun/verb /kruːˈseɪd/

crusade

十字军，激烈运动
Meaning
a vigorous campaign for a social, political, or religious cause; to fight passionately for a cause
Example
She has been crusading for women's rights all her life.
她为妇女权利而斗争了一生。
C1 noun /ˈkʌntrɪmən/

countryman

同胞
Meaning
a person from one's own country or rural area
Example
He was proud to meet a fellow countryman at the international conference.
他在国际会议上遇到一个同胞时感到自豪。
C1 noun /kənˈtɪn.ju.əns/

continuance

持续性
Meaning
the state of continuing or being prolonged; persistence
Example
The continuance of the project depended on securing additional funding.
项目的持续性依赖于确保额外的资金。
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。
C1 noun /ˈkæzəm/

chasm

裂缝 / 巨大差异
Meaning
a deep fissure in the earth's surface or a wide difference between people or ideas
Example
There was a great chasm between the two political parties.
两个政党之间有一个巨大的裂缝。
C1 adjective /ˌʃoʊ.vəˈnɪs.tɪk/

chauvinistic

沙文主义
Meaning
Displaying or characterized by excessive or prejudiced loyalty or support, especially towards one's own gender or group.
Example
His chauvinistic attitude alienated many of his female colleagues.
他的沙文主义态度疏远了许多女性同事。
C1 noun /kənˈtɪn.dʒən.si/

contingency

应急计划
Meaning
A provision for an unforeseen event or circumstance, especially in financial planning.
Example
The company has a contingency plan for economic downturns.
公司有一个应急计划来应对经济衰退。