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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 noun /kənˈtɔːrʃən/

contortion

扭曲或弯曲的形状; 从正常形状扭曲的行为
Meaning
a twisted or bent shape; the act of twisting out of the normal shape
Example
The gymnast's contortion amazed the audience.
体操运动员的扭曲动作令观众惊叹。
B1 verb /kənˈvɜːrt/

convert

转换
Meaning
to change from one form to another; to transform
Example
We can convert this room into an office.
我们可以把这个房间转换成办公室。
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/verb kənˈdʒɛk.tʃər

conjecture

推测
Meaning
An opinion or conclusion formed on the basis of incomplete information; to form an opinion or supposition about something.
Example
The scientist's conjecture was later proven true.
科学家的推测后来被证明是正确的。
B2 noun /ˈʃeɪndʒ ˈmænɪdʒmənt/

change management

变革管理
Meaning
The discipline that guides how we prepare, equip and support individuals, teams and organizations in making organizational change.
Example
Change management ensures smooth transitions.
变革管理确保平稳过渡。
C2 noun /ˌkæt ə ˈnaɪn ˌteɪlz/

cat-o-nine-tails

九尾鞭
Meaning
A whip with nine knotted cords, historically used for punishment.
Example
The sailor feared the cat-o-nine-tails more than the storm at sea.
那名水手比海上的风暴更害怕九尾鞭。
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。
C1 noun /ˈʃɪvəlri/

chivalry

骑士精神
Meaning
The medieval knightly system with its moral, social, and religious code; courteous behavior, especially toward women.
Example
The knight lived by the code of chivalry.
骑士遵循骑士精神的规范。
C1 verb /ˈkʌl.mɪ.neɪt/

culminate

达到顶点
Meaning
To reach the final or climactic stage of a process or activity.
Example
Years of hard work culminated in his success.
多年的辛勤工作最终以他的成功作为高潮。
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。
C2 verb /kənˈstrɪndʒ/

constringe

收缩
Meaning
to cause to shrink or contract; to constrict
Example
The medicine helped constringe the swollen tissues.
药物帮助收缩肿胀的组织。
C2 noun /klaɪm/

clime

气候带
Meaning
A region defined by its climate.
Example
He traveled to warmer climes during the winter.
他在冬天去温暖的气候带旅行。
B2 noun /ˈkɒl.ər/

Collar

项圈
Meaning
a band of material around the neck; in jewelry context, a close-fitting necklace
Example
She wore an elegant pearl collar to the formal dinner.
她在正式晚宴上戴了一条优雅的珍珠项圈。
C1 noun /kəˈnʌn.drəm/

conundrum

复杂的问题或谜题
Meaning
A complex problem or puzzle without an easy solution
Example
The ethical conundrum puzzled the researchers.
这个道德困境让研究人员感到困惑。
C2 noun /ˈkærɪt/

caret

插入符号 (^)
Meaning
A proofreading symbol (^) used to indicate where something should be inserted.
Example
The editor placed a caret to show where the missing word should go.
编辑器放置了一个插入符号来显示缺失的单词应该插入的位置。
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。
B1 noun /ˈkɜːr.ənt/

Current

水流
Meaning
a body of water or air moving in a definite direction; present time
Example
The river current was too strong for swimming.
河流的水流太强，无法游泳。
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。
B1 noun ˈkeɪ.bəl

cable

电缆
Meaning
A thick rope of wire or nonmetallic fiber, typically used for construction, mooring ships, or transmitting electricity or telecommunication signals.
Example
The cable connects countries across continents.
电缆连接跨越各大洲的国家。
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。
C2 noun /kəˈleɪʃən/

collation

汇编
Meaning
the act of collecting, comparing, and arranging in proper order
Example
The librarian spent hours on the collation of old manuscripts.
图书馆员花了几个小时整理古老的手稿。
C2 noun /kəˈpriːs/

caprice

反复无常
Meaning
a sudden, unpredictable change of mood or behavior
Example
She bought the expensive dress on a caprice.
她一时兴起买了那件昂贵的裙子。
C1 noun /ˈkæviˌæt/

caveat

警告
Meaning
a warning or condition to be considered before taking action
Example
The proposal was accepted with one caveat.
该提案在附带警告的情况下被接受。
C1 noun /ˈsɪstərn/

cistern

蓄水池
Meaning
A tank or container for storing water, usually for household use.
Example
The old house still had a cistern to collect rainwater.
这座老房子仍然有一个蓄水池来收集雨水。
C1 adjective /ˌkɒmprɪˈhɛnsəbl/

comprehensible

可理解的
Meaning
able to be understood; intelligible
Example
The teacher explained the topic in a comprehensible way.
老师以一种可以理解的方式解释了这个话题。
A2 noun ˈkɜːrɪdʒ

courage

勇气
Meaning
The ability to do something that frightens one; bravery.
Example
Courage is essential in the face of challenges.
面对挑战时勇气至关重要。
A2 noun /ˈkændl/

candle

蜡烛
Meaning
a stick of wax with a wick that burns to give light
Example
She lit a candle during the power cut.
在停电时她点燃了一根蜡烛。
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 noun/verb /kəˈmjuː.tɪŋ/

commuting

每日通勤
Meaning
Regular travel to and from workplace, daily journey for work.
Example
He spends two hours commuting to work every day.
他每天花两个小时通勤去上班。
B2 verb /ˈklærɪfaɪ/

clarify

澄清
Meaning
to make clear; to explain more clearly
Example
The teacher clarifies the difficult concept.
老师澄清了这个困难的概念。
B2 verb /ˈsɜːrkjəˌleɪt/

circulate

循环, 流通
Meaning
to move continuously or freely through a closed system or area
Example
Air circulated freely in the open hall.
空气在开放的大厅自由流通。
C2 noun /ˌkɑːrt ˈblɑːnʃ/

carte blanche

Meaning
complete freedom to act as one wishes
Example
The manager gave her team carte blanche to design the project.
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。
C1 adjective /ˈsiːs.ləs/

Ceaseless

不断的；持续的
Meaning
continuing without pause or interruption; endless
Example
The ceaseless rain lasted for three days.
不断的雨下了三天。
B2 noun /kəmˈplek.ʃən/

Complexion

肤色
Meaning
the natural color, texture, and appearance of a person's skin, especially on the face
Example
Her fair complexion glowed beautifully in the morning sunlight.
她的肤色在早晨的阳光下美丽地发光。
A1 adjective /koʊld/

Cold

寒冷的; 冰冷的; 冷淡的;
Meaning
having a low temperature; lacking warmth; unfriendly
Example
The cold winter wind made everyone shiver.
寒冷的冬季风让每个人都打了寒战。
A2 verb /ˈkænsəl/

cancel

取消
Meaning
to decide that something planned will not take place
Example
The flight was canceled due to heavy rain.
航班因大雨被取消。
C2 noun /ˈkruːɪt/

cruet

小容器
Meaning
a small container, especially for salt, pepper, oil, or vinegar, used at a dining table
Example
She filled the cruet with olive oil for the salad.
她将橄榄油倒入调味瓶中，为沙拉准备。
A2 noun,verb /kɔːrt/

court

法院或寻求关注或偏爱的地方
Meaning
a place where legal cases are heard or to seek favor or attention
Example
He courted the judge with respect.
他以尊重的态度追求法官。
C2 adjective ˈkoʊ.dʒənt

cogent

有说服力的
Meaning
Clear, logical, and convincing.
Example
His cogent argument convinced the jury.
他的有力论点说服了陪审团。
B1 noun /kənˈvɛnʃən/

convention

会议
Meaning
a widely accepted way of behaving or doing something; a formal meeting
Example
The annual writers' convention was held in Dhaka.
年度作家大会在达卡举行。
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。
C2 adjective /ˈkrɛdʒʊləs/

credulous

轻信的
Meaning
Having or showing too great a readiness to believe things.
Example
The credulous child believed every story she heard.
那个轻信的孩子相信了她听到的每一个故事。
A1 noun /ˈsɪti/

city

城市
Meaning
a large town or an urban area with its own government
Example
Dhaka is the largest city in Bangladesh.
北京是中国最大的城市。
C2 noun /ʃɪˈkeɪnəri/

chicanery

欺诈
Meaning
The use of trickery or deception to achieve a purpose.
Example
The politician was accused of chicanery to win the election.
这位政治家因利用欺诈手段赢得选举而被指控。
B1 noun /ˈkæt.ər.pɪl.ər/

Caterpillar

毛毛虫
Meaning
the larva of a butterfly or moth that feeds on plants
Example
The caterpillar ate all the leaves on the plant.
毛毛虫吃掉了植物上的所有叶子。
C2 verb /ˌkɒmənˈdɪə/

commandeer

强行占领
Meaning
To take control or possession of something, often by force or authority.
Example
The soldiers commandeered the villagers’ homes during the war.
战争期间，士兵们强行占领了村民的家。
B2 adjective /ˈtʃeɪn.dʒə.bəl/

Changeable

可变的; 易变的
Meaning
able to be changed; likely to change frequently
Example
The weather is very changeable in spring.
春天的天气非常多变。
B1 noun /ˈkætəɡɔːri/

category

类别
Meaning
a class or division of things regarded as having particular shared characteristics
Example
Books are arranged by category in the library.
书籍在图书馆按类别排列。
C2 noun /ˈsɛʃən/

cession

放弃权利或财产
Meaning
The formal giving up of rights, property, or territory, especially by a state.
Example
The treaty resulted in the cession of land to the neighboring country.
条约导致了土地的转让给邻国。
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。
A2 adjective /ˈkeər.ləs/

Careless

粗心的; 疏忽的; 不注意的; 漫不经心的;
Meaning
not giving sufficient attention or thought to avoiding harm or errors; negligent; inattentive
Example
His careless driving caused a serious accident on the highway.
他粗心的驾驶导致高速公路上发生了一起严重的事故。
C1 verb /kənˈkɒkt/

concoct

混合或发明
Meaning
to make something, especially food or a story, by mixing or inventing
Example
He concocted a story to explain his absence.
他编造了一个故事来解释他的缺席。
B2 adjective /ˈtʃuːzi/

choosy

挑剔
Meaning
very careful in choosing; selective
Example
She is very choosy about the clothes she wears.
她对她穿的衣服非常挑剔。
B2 adverb /ˈkrɪtɪkli/

critically

严重地
Meaning
in a way that expresses disapproval or a very serious, important way
Example
He was critically injured in the accident.
他在事故中受了重伤。
B2 adjective /ˈkɒnʃəs/

conscious

清醒
Meaning
Aware of and responding to one's surroundings; awake.
Example
She was fully conscious after the surgery.
她在手术后完全清醒。
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。
B2 adverb /kənˈsɪdərəbli/

Considerably

显著地；相当大地
Meaning
to a notably large degree; significantly; substantially
Example
The price has increased considerably over the past year.
过去一年价格显著上涨。
A1 noun /klɒk/

Clock

时钟
Meaning
an instrument used to indicate, keep, and co-ordinate time
Example
The clock on the wall shows three o'clock.
墙上的时钟显示三点。
C2 noun /ˈkoʊdə/

coda

尾声
Meaning
the concluding passage of a piece of music or a literary work
Example
The novel ends with a reflective coda that ties up the themes.
这部小说以一段反思性的尾声结束，将主题联系起来。
C1 verb /ˈkæp.saɪz/

capsize

翻覆
Meaning
to overturn in the water
Example
The small fishing boat capsized during the storm.
小渔船在风暴中翻覆。
C1 adjective /ˌkævəˈlɪər/

cavalier

漫不经心
Meaning
showing a lack of proper concern; dismissive or offhand
Example
He had a cavalier attitude toward safety regulations.
他对安全规定有一种漫不经心的态度。
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。
B1 noun /ˈsɜːrkəmstæns/

circumstance

情况
Meaning
a fact or condition connected with an event or action
Example
She handled the difficult circumstances bravely.
她勇敢地应对了困难的情况。
B2 noun /tʃʌŋk/

chunk

块 / 大块
Meaning
a thick or solid piece of something
Example
She cut the cake into large chunks.
她把蛋糕切成大块。
C2 verb /kædʒ/

cadge

乞讨
Meaning
To beg or obtain something, especially food or money, without paying for it.
Example
He tried to cadge a free meal from the restaurant.
他试图从餐厅要一顿免费的饭。
C1 verb /ˈkəʊ.dɪ.faɪ/

codify

编码
Meaning
to arrange laws, rules, or ideas into a clear and systematic code
Example
The committee worked to codify the existing laws.
委员会致力于编码现有的法律。
B1 adjective /ˈkəʊstəl/

coastal

沿海
Meaning
relating to or near a coast or shoreline
Example
They built a resort in a coastal area.
他们在沿海地区建造了一个度假村。
C2 noun /kɔːrˈteɪʒ/

cortege

葬礼队伍
Meaning
a solemn procession, especially for a funeral
Example
A cortege of mourners followed the hearse to the cemetery.
一队哀悼的人跟随灵车到墓地。
B1 noun /ˌkrɪstiˈænɪti/

christianity

基督教
Meaning
the religion based on the teachings of Jesus Christ
Example
Christianity has millions of followers around the world.
基督教在全世界有数百万信徒。
B2 noun /ˈkæp.tɪv/

Captive

俘虏
Meaning
a person who has been taken prisoner or an animal that has been confined
Example
The captive was held in a small cell for several months.
俘虏被关押在一个小牢房里好几个月。
B1 adjective /ˈkoʊzi/

cozy

舒适的
Meaning
giving a feeling of comfort, warmth, and relaxation
Example
We sat in a cozy little café on a rainy day.
在一个雨天，我们坐在一个舒适的小咖啡馆里。
A2 verb /tʃɑːrdʒ/

charge

收费/指控
Meaning
to demand payment; to formally accuse; to rush forward aggressively
Example
The store charges extra for home delivery.
商店收取额外的家居配送费用。
A1 noun /kloʊðz/

clothes

衣服
Meaning
garments worn on the body
Example
She bought new clothes for the party.
她为聚会买了新衣服。
A2 adjective ˈkʌmftəbəl

comfortable

舒适
Meaning
Giving a feeling of physical ease and relaxation; free from hardship or unpleasant conditions.
Example
Urban planning aims to make cities more comfortable.
城市规划旨在使城市更加舒适。
C2 adjective /kəˈnaɪ.vɪŋ/

conniving

阴险的
Meaning
secretly scheming or plotting to help in wrongdoing
Example
He is a conniving politician who manipulates people for power.
他是一个阴险的政治家，利用权力操纵人民。
C1 adjective /ˈkælkjʊleɪtɪŋ/

calculating

精明的
Meaning
acting in a scheming and ruthlessly determined way
Example
He had a cold and calculating approach to business.
他在商业上采取了冷酷而精明的态度。
B2 adjective /ˈkræŋki/

cranky

脾气暴躁
Meaning
bad-tempered, easily annoyed, or irritable
Example
The child gets cranky when he is hungry.
当孩子饿了时，他会变得脾气暴躁。
C1 noun kəˈmɑːnd ɪˈkɒn.ə.mi

command economy

计划经济
Meaning
An economic system where economic activities are controlled by the government.
Example
In a command economy, the government controls production and prices.
在计划经济中，政府控制生产和价格。
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。
A2 noun /kəˈlek.ʃən/

Collection

收藏；合集；档案
Meaning
a group of objects gathered together; the action or process of collecting
Example
She has an impressive collection of vintage books in her library.
她在她的图书馆里有一部令人印象深刻的古籍收藏。
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
B2 verb /kənˈtɛnd/

contend

竞争，主张
Meaning
to strive or compete for something; to assert earnestly
Example
Athletes from around the world contend for the championship.
来自世界各地的运动员为冠军而争斗。
C2 adjective /ˈsɪlieɪtɪd/

ciliated

带有纤毛的
Meaning
Having minute hairlike projections (cilia) on the surface of cells or organisms.
Example
The ciliated cells in the respiratory tract help move mucus out of the lungs.
呼吸道中的纤毛细胞帮助将粘液排出肺部。
B2 adjective /ˈsɛntɪɡreɪd/

centigrade

摄氏度 (摄氏)
Meaning
Relating to the Celsius temperature scale, where water freezes at 0° and boils at 100°.
Example
The weather forecast predicted 30 degrees centigrade.
天气预报预测了30度摄氏度。
C2 noun /koʊˈkɛt/

coquette

卖弄风情的女人
Meaning
a woman who flirts lightheartedly
Example
She was a coquette, always charming everyone at the party.
她是个卖弄风情的女人，总是在聚会上迷倒所有人。
C2 verb /ˈkælsɪfaɪ/

calcify

通过钙盐沉积变硬
Meaning
To harden by deposition of calcium salts; to become rigid or inflexible.
Example
Over time, the tissue began to calcify and lose flexibility.
随着时间的推移，组织开始钙化并失去柔韧性。
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。
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 /ˈtʃæpəl/

chapel

小教堂
Meaning
A small church or a room used for Christian worship, often within a larger building.
Example
The couple got married in a small countryside chapel.
这对夫妇在一个小教堂里结婚。
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。
C2 noun /ˈkɒn.tjʊ.mə.si/

contumacy

不服从, 固执
Meaning
stubborn refusal to obey authority
Example
His contumacy led to his suspension from the council.
他的不服从导致他被从委员会中停职。
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。
C1 noun /kəˈluːʒən/

collusion

共谋
Meaning
A secret agreement or cooperation, especially for an illegal or dishonest purpose.
Example
There was evidence of collusion between the officials and the contractors.
有证据表明官员与承包商之间有共谋。
A2 verb /kjʊər/

cure

治疗
Meaning
to make someone healthy again after an illness
Example
The new medicine cured her of the infection.
新的药物治愈了她的感染。
B1 adverb /ˈkɒnstəntli/

Constantly

不断地; 总是; 不停地
Meaning
continuously over a period of time; always; without stopping
Example
The baby was constantly crying throughout the night.
婴儿整晚不停地哭泣。
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。
B1 noun /kəmˈpær.ɪ.sən/

Comparison

比较
Meaning
the act of examining the similarities and differences between two or more things
Example
The teacher made a comparison between the two poems to show their different styles.
老师通过比较两首诗的不同风格来展示它们的差异。
C1 verb /kənˈfleɪt/

conflate

合并 / 混合
Meaning
To combine two or more things, often confusingly, into one.
Example
The article tends to conflate facts with opinions.
文章倾向于将事实和意见混为一谈。
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。
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。
C1 noun ˈkɔː.pəs

corpus

用于语言分析和研究的大型语言数据集合
Meaning
A large collection of linguistic data used for language analysis and research.
Example
Linguists use a corpus to analyze language patterns.
语言学家使用语料库来分析语言模式。
B1 verb /kənˈvɪns/

convince

说服
Meaning
to make someone believe or feel certain about something
Example
She convinced him to attend the meeting.
她说服了他参加会议。
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。
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。
A2 noun ˈsen.tərz

centers

中心
Meaning
The middle point of a circle or sphere, equidistant from every point on the circumference or surface; a place or group of buildings where a specified activity is concentrated.
Example
Centers drive regional development.
中心推动区域发展。
B1 noun /kəmˈpɛtɪtər/

competitor

竞争者
Meaning
a person, team, or company that competes with others
Example
The company lowered its prices to beat its main competitor.
公司降低了价格以击败其主要竞争者。
B1 noun /kəmˈpænjən/

companion

伙伴
Meaning
a person or animal you spend time with or travel with
Example
He was my companion during the long journey.
他是我在漫长旅程中的伴侣。
C2 noun, verb /ˈkæŋkər/

canker

Meaning
A fungal disease of plants; an ulcerous sore in the mouth; to corrupt or destroy slowly
Example
The tree was infected with a canker that damaged its bark.
A1 noun /ˈkrɪsməs/

christmas

圣诞节
Meaning
an annual festival celebrating the birth of Jesus Christ, observed on December 25
Example
Families gather to celebrate Christmas with joy and love.
家庭聚在一起庆祝圣诞节，带着欢乐和爱。
C1 noun ˌkɒn.ʃiˈen.ʃəs.nəs

conscientiousness

责任心
Meaning
The quality of wishing to do one's work or duty well and thoroughly; diligence.
Example
Her conscientiousness in work led to a well-organized project.
她在工作中的责任心使得项目井然有序。
B2 adjective /ˈkrɒnɪk/

chronic

慢性
Meaning
Lasting for a long time or constantly recurring, often describing illness.
Example
She suffers from chronic back pain.
她患有慢性的背痛。
C2 noun /ˈkætəˌklɪzəm/

cataclysm

灾难
Meaning
A sudden and violent event that causes great destruction or upheaval.
Example
The earthquake was a cataclysm that reshaped the city.
地震是一个重新塑造城市的灾难。
B1 noun /ˈsɪtɪzən/

citizen

公民
Meaning
a legally recognized subject or national of a state
Example
Every citizen has the right to vote.
每个公民都有投票权。
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。
C2 noun /koʊˈædʒətər/

coadjutor

助手
Meaning
a person who helps or assists another, especially in a religious or official capacity
Example
The bishop appointed a coadjutor to assist him with his duties.
主教任命了一位助手来协助他完成职责。
B2 verb /kənˈfɔːrm/

conform

遵守
Meaning
To comply with rules, standards, or laws.
Example
Students must conform to the school regulations.
学生必须遵守学校的规定。
C1 noun /krəˈvæs/

crevasse

深裂缝
Meaning
a deep crack in a glacier or the earth’s surface
Example
The climbers carefully crossed the icy crevasse.
登山者小心地越过了冰冷的裂缝。
C2 adjective /kənˈdʒɛktʃərəl/

conjectural

推测的
Meaning
based on guesswork or incomplete evidence rather than certain knowledge
Example
His explanation was purely conjectural and lacked proof.
他的解释完全是推测性的，缺乏证据。
A2 noun /kənˌɡrætʃ.əˈleɪ.ʃənz/

Congratulations

祝贺
Meaning
words expressing praise for an achievement or good wishes on a special occasion
Example
Congratulations on your promotion! You really deserved this success.
恭喜晋升！你真的值得这次成功。