urbane
All a b c d e f g h i j k l m n o p q r s t u v w x y z
All CEFR A1 A2 B1 B2 C1 C2
Content locale
EN 英语 BN 孟加拉语 HI 印地语 ES 西班牙语 FR 法语 DE 德语 RU 俄语 ZH 中文 JA 日语
All Vocabulary Cards All Vocabularies
C2 adjective /ɜːrˈbeɪn/

urbane

都市的
Meaning
showing polished manners, refinement, and sophistication
Example
He was an urbane gentleman who charmed everyone at the party.
他是一个都市绅士，在派对上迷住了所有人。
C2 adjective /ɡrɪˈɡɛəriəs/

gregarious

好社交
Meaning
Fond of company; sociable.
Example
She is a gregarious person who loves meeting new people.
她是一个好社交的人，喜欢结识新朋友。
C2 noun /ˌær.əˈbɪl.ɪ.ti/

arability

可耕性
Meaning
The quality of land being suitable for growing crops.
Example
The arability of land depends on soil quality and water availability.
土地的可耕性取决于土壤质量和水源的可用性。
C2 verb /poʊˈtɛnʃiˌeɪt/

potentiate

增强
Meaning
To increase the power, effect, or likelihood of something.
Example
Caffeine can potentiate the effects of some medicines.
咖啡因可以增强某些药物的效果。
C2 adjective /droʊl/

droll

滑稽
Meaning
curious or unusual in a way that provokes dry amusement
Example
He had a droll sense of humor that made everyone laugh.
他有一种滑稽的幽默感，让每个人都笑了。
C2 noun /ˈbɒdɪs/

bodice

束身衣
Meaning
the part of a woman's dress that covers the body from the neck to the waist
Example
She wore a dress with an embroidered bodice.
她穿了一件带有刺绣束身衣的裙子。
C2 adjective /ˈmɪnsɪŋ/

mincing

做作
Meaning
affectedly delicate, dainty, or refined in manner or movement
Example
He walked with mincing steps across the stage.
他走过舞台时步伐轻盈。
C2 noun /kəˈdʒoʊləri/

cajolery

奉承
Meaning
Flattering or coaxing talk intended to persuade someone.
Example
Through cajolery, he convinced his boss to grant him a raise.
通过奉承，他说服了老板给他加薪。
C2 noun /pəˈlæv.ər/

palaver

无意义的讨论 / 喧嚣
Meaning
prolonged and idle discussion; fuss or unnecessary talk
Example
After much palaver, they finally agreed on the plan.
经过长时间的无意义讨论后，他们最终同意了计划。
C2 noun /dɪnt/

dint

努力，撞击痕迹
Meaning
an impression or hollow made by a blow; force or power
Example
By dint of hard work, he achieved success.
通过努力工作，他取得了成功。
C2 noun /ɪˈfɛmɪnəsi/

effeminacy

女性化
Meaning
The quality of showing traits traditionally associated with women, such as delicacy or softness.
Example
In ancient times, effeminacy was often criticized as a sign of weakness.
在古代，女性化常常被批评为软弱的标志。
C2 adjective /ˈbʌlbəs/

bulbous

膨胀的 / 圆形的
Meaning
Bulging, round, or swollen in shape; resembling a bulb.
Example
The frog had a bulbous nose and big eyes.
青蛙有一个膨胀的鼻子和大眼睛。
C2 noun /ˈhɑːtʃ.pɑːtʃ/

Hotchpotch

杂乱无章的混合物; 一堆混杂的东西
Meaning
a confused mixture; a jumbled assortment of things
Example
The room was a hotchpotch of old furniture, books, and random decorations.
房间里堆满了旧家具、书籍和随意摆放的装饰品，杂乱无章。
C2 noun /ˈmʌɡwʌmp/

mugwump

独立于党派的人
Meaning
a person who remains independent from party politics or remains aloof from disputes
Example
He was called a mugwump for refusing to join either political side.
他因为拒绝加入任何政治派别而被称为马格旺普。
C2 verb /fɔrˈswɛr/

forswear

放弃
Meaning
to renounce or reject; to give up completely
Example
He forswore his old habits and started a new life.
他放弃了旧习惯，开始了新的生活。
C2 noun /əˈmæl.ɡəm/

amalgam

混合物
Meaning
a mixture or blend of different things
Example
The new policy is an amalgam of several previous laws.
新政策是多个先前法律的混合物。
C2 verb /ʌnˈɑːrm/

unarm

解除武装
Meaning
to remove weapons from someone or to deprive of means of attack or defense
Example
The soldiers were ordered to unarm the prisoners.
士兵接到命令解除囚犯的武装。
C2 noun /ˌhoʊmə.dʒəˈniːəti/

homogeneity

Meaning
The quality or state of being all the same or all of the same kind.
Example
The cultural homogeneity of the village made it feel unified.
C2 noun /ˈprɑːflɪɡəsi/

profligacy

挥霍
Meaning
reckless wastefulness or extravagance
Example
His profligacy with money led him to bankruptcy.
他的挥霍导致了破产。
C2 noun /tʃəˈmeɪ.li/

Chameli

茉莉花
Meaning
a variety of jasmine flower with small white fragrant petals
Example
The chameli flowers are commonly used to make garlands and perfumes.
茉莉花常用于制作花环和香水。
C2 noun /əˈdɛndəm/

addendum

附录
Meaning
an additional item or piece of information added at the end of a document or book
Example
The report included an addendum with updated statistics.
报告中包含了带有更新统计数据的附录。
C2 noun /ˈdiːɪst/

deist

自然神论者
Meaning
a person who believes in the existence of a supreme being but rejects organized religion
Example
The philosopher identified himself as a deist.
这位哲学家把自己认定为自然神论者。
C2 noun /ɪnˈdɛntʃər/

indenture

Meaning
A formal legal agreement, contract, or document, often relating to work or service.
Example
In the 18th century, many workers came under indenture to work overseas.
C2 noun /ˈʌmbrɪdʒ/

umbrage

冒犯，愤怒
Meaning
A feeling of resentment or offense.
Example
She took umbrage at his rude remark.
她对他的粗鲁言论感到愤怒。
C2 noun /ˌɪnədˈvɜːrtəns/

inadvertence

疏忽
Meaning
Failure to pay attention; carelessness.
Example
The error happened through sheer inadvertence.
错误是由于完全的疏忽发生的。
C2 noun /ˈsælvər/

salver

银托盘
Meaning
A tray, typically made of silver, used for serving food or drinks.
Example
The butler brought in the tea on a silver salver.
管家将茶水放在银托盘上端来。
C2 noun əˈlæk.rə.t̬i

alacrity

快速和愉快的准备
Meaning
Brisk and cheerful readiness.
Example
He accepted the challenge with alacrity.
他以 alacrity 接受了挑战。
C2 noun /ˈæn.əlz/

annals

年鉴
Meaning
Historical records of events, usually arranged chronologically.
Example
Her name will be remembered in the annals of science.
她的名字将在科学年鉴中被铭记。
C2 noun ˈdɒɡ.ɪd.nəs

doggedness

顽强
Meaning
Stubborn persistence in achieving something without giving up.
Example
His doggedness in pursuing his goals was inspiring.
他在追求目标时的顽强精神令人鼓舞。
C2 noun /ˈɔːldərmən/

alderman

市议会成员
Meaning
An elected member of a municipal council in certain cities and towns.
Example
The alderman proposed a new plan for community parks.
市议员提出了一个新的社区公园计划。
C2 noun /ˈsaɪ.ə.lɪz.əm/

sciolism

表面知识的假装
Meaning
pretentious show of superficial knowledge
Example
His speech was full of sciolism, impressing no one.
他的演讲充满了赛奥利主义，没有打动任何人。
C2 verb /rɪˈvaɪl/

revile

谴责
Meaning
to criticize in an abusive or angrily insulting manner
Example
The politician was reviled by the public for his corruption.
政治家因腐败而被公众谴责。
C2 noun /bəˈsuːn/

bassoon

一种大号木管乐器
Meaning
a large woodwind instrument with a deep sound
Example
The orchestra featured a beautiful bassoon solo.
乐团演奏了美妙的巴松独奏。
C2 noun /ˈɔːlmənæk/

almanac

年鉴
Meaning
An annual publication containing calendars, weather forecasts, astronomical data, and other useful information.
Example
He consulted the almanac to check the phases of the moon.
他查阅了年鉴，以查看月亮的各个阶段。
C2 adjective /ˈdɪlətɔːri/

dilatory

拖延的
Meaning
Tending to cause delay; slow to act.
Example
The committee was criticized for its dilatory response to the crisis.
该委员会因其在危机中的拖延反应而受到批评。
C2 noun /ˈsuːpsɒ̃/

soupcon

少量
Meaning
a very small quantity of something; a trace
Example
She added just a soupcon of spice to the dish.
她在菜肴中只加了一点香料。
C2 noun /doʊˈniː/

donee

受赠人
Meaning
A person who receives a gift or donation.
Example
The scholarship fund’s donee expressed heartfelt gratitude.
奖学金基金的受赠人表达了深深的感激之情。
C2 adjective /prəˈvaɪzəri/

provisory

临时的
Meaning
conditional; depending on certain terms being met
Example
The arrangement was only provisory until the final contract was signed.
该安排只是临时的，直到最终合同签署。
C2 noun /vɛnˈdɪʃən/

vendition

销售
Meaning
The act of selling; sale.
Example
The auction was a formal vendition of the estate's assets.
拍卖是财产资产的正式销售。
C2 adjective /bɪˈnaɪtɪd/

benighted

黑暗的，无知的
Meaning
In a state of intellectual or moral ignorance; overtaken by darkness.
Example
The explorers were lost in the benighted forest without any guide.
探险者在没有向导的情况下迷失在黑暗的森林中。
C2 noun /ˌriːkəˌpɪtjʊˈleɪʃən/

recapitulation

重述
Meaning
The act of summarizing or repeating the main points of something.
Example
The professor gave a brief recapitulation of the lecture before ending the class.
教授在结束课程之前简要地重述了讲座内容。
C2 noun /ˈmaɪ.nə/

Mynah

八哥
Meaning
a tropical bird with dark feathers that can mimic human speech
Example
The mynah bird repeated every word I said.
八哥鸟重复了我说的每一个词。
C2 verb /ʧeɪf/

chafe

Meaning
To make or become sore by rubbing; to feel irritation or impatience.
Example
The tight shoes began to chafe his heels.
C2 noun /ˈblændɪʃmənt/

blandishment

恭维
Meaning
flattering or pleasing statement or action used to persuade someone gently
Example
She used every blandishment to win his support.
她用了所有的恭维来赢得他的支持。
C2 noun /klɛərˈvɔɪəns/

clairvoyance

通灵
Meaning
the supposed ability to perceive events beyond normal sensory contact; psychic insight
Example
She claimed to have clairvoyance and predicted the future.
她声称自己有通灵能力，并预言了未来。
C2 adjective /ɪˈrɛzəluːt/

irresolute

优柔寡断
Meaning
uncertain or indecisive; lacking determination
Example
He stood irresolute at the crossroads, unsure which path to take.
他在十字路口犹豫不决，不知道走哪条路。
C2 noun /ˌser.əˈbreɪ.ʃən/

cerebration

脑力活动
Meaning
the process of thinking or using the brain actively
Example
The lecture sparked intense cerebration among the students.
这场讲座激发了学生们的强烈脑力活动。
C2 noun /ˈfɪlɪɡri/

filigree

精致的装饰工艺，通常由金或银制成
Meaning
delicate ornamental work of fine wire, usually of gold or silver
Example
The necklace was decorated with intricate gold filigree.
项链上装饰着精致的金质镶嵌工艺。
C2 verb /voʊˈsɪfəˌreɪt/

vociferate

大声抗议
Meaning
to shout, complain, or argue loudly or vehemently
Example
The protesters vociferated against the unfair law.
抗议者大声抗议不公平的法律。
C2 adjective /rɪˈkæl.sɪ.trənt/

recalcitrant

倔强的, 顽固的, 不服从的
Meaning
Having an obstinately uncooperative attitude toward authority or discipline.
Example
The recalcitrant student refused to follow rules.
倔强的学生拒绝遵守规则。
C2 verb /ˈwiːdəl/

wheedle

用奉承说服
Meaning
to persuade or coax someone by using flattery or smooth talk
Example
She managed to wheedle extra pocket money from her father.
她成功地从父亲那里获得了额外的零花钱。
C2 verb (archaic/rare) /rɛk/

reck

在乎
Meaning
To care about or be concerned with (something); to have regard for.
Example
He does not reck the dangers of his actions.
他不在乎自己行为的危险。
C2 adjective /ænˈhaɪdrəs/

anhydrous

Meaning
Containing no water.
Example
The chemist used anhydrous ammonia for the experiment.
C2 noun /blæk ˈkɑːr.də.məm/

Black Cardamom

黑豆蔻
Meaning
a large aromatic spice pod with a smoky flavor, commonly used in Indian and Middle Eastern cooking
Example
Add black cardamom to the curry for a rich, smoky flavor.
在咖喱中加入黑豆蔻，增添丰富的烟熏味。
C2 verb /prɪˈværɪkeɪt/

prevaricate

Meaning
to avoid telling the truth by not giving a direct answer
Example
The politician began to prevaricate when asked about the scandal.
C2 verb /ɡɪld/

gild

镀金
Meaning
to cover something with a thin layer of gold or to make something appear more attractive than it really is
Example
The craftsman gilded the frame to give it a luxurious look.
工匠给框架镀上了金色，使它看起来更加奢华。
C2 verb /skwɛltʃ/

squelch

Meaning
to make a soft sucking sound, such as when walking on mud; to suppress or silence
Example
His boots squelched in the wet ground.
C2 noun /ˈfɪl.ɪ.staɪn/

philistine

对文化和艺术漠不关心或敌对的人
Meaning
a person who is indifferent or hostile to culture and the arts
Example
He was criticized as a philistine for dismissing modern art.
他因拒绝现代艺术而被批评为非利士人。
C2 verb /dɪˈspɒnd/

despond

沮丧
Meaning
to lose confidence or hope; to become dejected
Example
After repeated failures, he began to despond.
在多次失败后，他开始感到沮丧。
C2 noun /ˈfoʊ.li.oʊ/

folio

大书或手稿
Meaning
A sheet of paper folded once to form two leaves (four pages) of a book; also a term for a large book or manuscript.
Example
The library houses an ancient Shakespeare folio.
图书馆里有一本古老的莎士比亚大书。
C2 verb /ɪkˈskruːʃieɪt/

excruciate

折磨
Meaning
to cause intense pain or suffering
Example
The injury excruciated him with unbearable pain.
伤害让他经历了无法忍受的疼痛。
C2 noun ˌfjuːmɪˈɡeɪʃən

fumigation

熏蒸
Meaning
The practice of disinfecting or purifying an area using gas or smoke.
Example
Fumigation is an effective method to control pest infestations.
熏蒸是一种有效的控制害虫侵扰的方法。
C2 noun /feɪt/

fete

节日，庆典
Meaning
a celebration or festival, often in honor of someone
Example
The village held a grand fete to celebrate the harvest.
村庄举行了盛大的节日庆典来庆祝丰收。
C2 noun /ˌkɒnfəˈriː/

conferee

会议参与者
Meaning
a person who takes part in a conference
Example
Each conferee received a badge at the registration desk.
每个会议参与者在注册桌上都收到了一枚徽章。
C2 noun /ɪmp/

imp

小顽皮精灵
Meaning
a small mischievous devil or sprite; a playful troublemaker
Example
The child was acting like a little imp, hiding his toys everywhere.
那个孩子像一个小顽皮精灵，四处藏玩具。
C2 verb /stɑːntʃ/

stanch

止血
Meaning
to stop the flow of blood or liquid from a wound or source
Example
The nurse quickly stanched the bleeding from the cut.
护士迅速止住了切口处的出血。
C2 noun /ˌvæs.ɪˈleɪ.ʃən/

Vacillation

摇摆不定
Meaning
the inability to decide between different opinions or actions; indecision
Example
His constant vacillation between career choices frustrated his parents.
他在职业选择之间的持续犹豫让他的父母感到沮丧。
C2 noun /kəˈmɛstɪbəl/

comestible

可食用的
Meaning
An item of food that can be eaten.
Example
The picnic basket was full of delicious comestibles.
野餐篮子里装满了美味的可食用物品。
C2 adverb /əˈsʌndər/

asunder

分成碎片
Meaning
into separate parts; apart
Example
The ancient empire was torn asunder by war.
古老的帝国在战争中被撕裂成碎片。
C2 adjective /dɪsˈkɜrsɪv/

discursive

离题的
Meaning
Tending to digress or move from topic to topic; lengthy and rambling.
Example
His discursive style made the lecture hard to follow.
他的离题风格使得讲座难以跟上。
C2 noun /dɪˈstɪlər/

distiller

蒸馏师
Meaning
A person or company that makes alcoholic drinks or purified liquids by distillation.
Example
The distiller introduced a new brand of whiskey last year.
蒸馏师在去年推出了一款新品牌的威士忌。
C2 adjective /ɪˈnɪmɪkəl/

inimical

敌对的 / 不利的
Meaning
tending to obstruct or harm; unfriendly or hostile
Example
The policy was inimical to the country's economic growth.
该政策对该国的经济增长不利。
C2 adjective /eɪˈsɛfələs/

acephalous

Meaning
having no leader or head; headless
Example
The acephalous group soon fell into disorganization.
C2 noun /ˌænɪˈmɒmɪtər/

anemometer

风速计
Meaning
An instrument used to measure the speed and direction of wind.
Example
The scientist used an anemometer to record the wind speed during the storm.
科学家使用风速计记录风速，在风暴期间。
C2 noun /dɪˈbɔːtʃəri/

debauchery

堕落
Meaning
excessive indulgence in sensual pleasures; corruption or vice
Example
The novel depicts the debauchery of the aristocrats in the city.
这本小说描写了城市中贵族的堕落。
C2 noun /hæˈʃiːʃ/

hashish

哈希什
Meaning
a drug made from the resin of the cannabis plant
Example
The police arrested him for possessing hashish.
警方因持有哈希什逮捕了他。
C2 noun /ˈbloʊˌhɑrd/

blowhard

自负的人
Meaning
a person who brags a lot or talks in a boastful way
Example
Everyone avoided the blowhard at the party because he wouldn't stop bragging.
在派对上，大家都避开了那个自负的人，因为他不停地吹嘘。
C2 verb /prɪˈpɒndəreɪt/

preponderate

占优势
Meaning
To be greater in influence, weight, or number.
Example
In the debate, logical arguments preponderated over emotional appeals.
在辩论中，逻辑论点优于情感呼吁。
C2 adjective /ʌnˈstɪntɪŋ/

unstinting

慷慨的
Meaning
given generously without holding back
Example
She received unstinting support from her family.
她从家人那里得到了慷慨的支持。
C2 adverb, noun /ˈwɛə.wɪð/

wherewith

手段
Meaning
With which; the means or resources needed for something.
Example
He lacked the money wherewith to buy a new house.
他没有足够的钱来买新房。
C2 adjective /ˌɪnɪkˈstɛnsəbl/

inextensible

不可伸展的
Meaning
Not capable of being stretched or extended.
Example
This rope is made of an inextensible material.
这根绳子是由不可伸展的材料制成的。
C2 adjective /ˈmjuːlɪʃ/

mulish

Meaning
extremely stubborn or unwilling to change
Example
She remained mulish despite all the convincing arguments.
C2 adjective /ˌstætʃuˈɛsk/

statuesque

雕像般的
Meaning
Having the grace, beauty, or dignity of a statue; tall and attractively proportioned.
Example
She had a statuesque figure that turned heads wherever she went.
她有着雕像般的身形，每走到哪里都会吸引视线。
C2 noun /ˈɡæŋ.ɡriːn/

gangrene

坏疽
Meaning
The death of body tissue due to lack of blood supply or infection.
Example
If untreated, the wound may lead to gangrene.
如果不治疗，伤口可能会导致坏疽。
C2 adjective /ˈsɪbɪlənt/

sibilant

带有嘶嘶声的
Meaning
Making or characterized by a hissing sound.
Example
The word 'snake' starts with a sibilant sound.
单词 'snake' 以西比兰特的声音开始。
C2 noun (plural) /ˈlɪniəmənts/

lineaments

面部特征
Meaning
The features or distinctive characteristics of the face or body.
Example
The lineaments of his face were sharp and stern.
他的面部特征很尖锐且严肃。
C2 noun /ˈiːɡres/

egress

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

antediluvian

极为古老
Meaning
extremely old-fashioned; belonging to the time before the biblical flood
Example
His views on women are positively antediluvian.
他对女性的看法是完全过时的。
C2 noun /ˈtruːɪzəm/

truism

陈词滥调
Meaning
a statement that is obviously true and says nothing new or interesting
Example
It is a truism that hard work leads to success.
努力工作带来成功，这是一条陈词滥调。
C2 verb /ˌɪn.trəˈmɪt/

intromit

引入
Meaning
To insert or introduce something into a place or body.
Example
The doctor carefully intromitted the instrument into the wound.
医生小心地将仪器引入伤口。
C2 noun /lɪnt/

lint

棉絮
Meaning
small soft fibers that come off cloth, often found in dryers or on clothes
Example
There was lint all over his black shirt after the wash.
洗完后，他的黑衬衫上有棉絮。
C2 verb /əˈɡlɒməˌreɪt/

agglomerate

聚集
Meaning
To collect or form into a mass or group.
Example
The dust particles began to agglomerate into larger clusters.
尘粒开始聚集成更大的团块。
C2 adjective /ɪmˈplaɪəbl/

impliable

可暗示的
Meaning
Capable of being implied or suggested.
Example
The meaning of the statement is not directly clear but is impliable from the context.
声明的意思并不直接明确，但可以从上下文中推断。
C2 noun /krɪpˈtɒɡ.rə.fi/

cryptography

通过加密或编码技术保护信息的实践
Meaning
The practice of securing information through encryption or coding techniques
Example
Modern cryptography ensures secure online transactions.
现代加密学确保了安全的在线交易。
C2 adjective /ˌpriːpəˈzɛsɪŋ/

prepossessing

迷人
Meaning
Attractive or appealing in appearance or manner.
Example
She had a prepossessing smile that charmed everyone.
她有一个迷人的微笑，让每个人都着迷。
C2 adjective /ˌhɜːrkjʊˈliːən/

herculean

极其困难
Meaning
Requiring great strength or effort; very difficult to perform.
Example
It was a herculean task to rebuild the city after the disaster.
灾难后重建城市是一项极其困难的任务。
C2 noun /ˌviːələnsɛloʊ/

violoncello

大提琴
Meaning
The full name of the cello, a large string instrument played with a bow and held between the knees.
Example
He practiced the violoncello for hours each day.
他每天练习大提琴好几个小时。
C2 noun /ˈpɜr.fɪ.di/

Perfidy

背叛
Meaning
deliberate breach of faith or trust; treachery; betrayal of trust
Example
His perfidy shocked all who had trusted him.
他的背叛震惊了所有信任他的人。
C2 adjective /prɪˈpɒndərənt/

preponderant

主要的
Meaning
Having superior weight, force, influence, or importance.
Example
The preponderant influence of the media shapes public opinion.
媒体的主要影响塑造了公众舆论。
C2 noun /ˈmætrɪˌsaɪd/

matricide

弑母
Meaning
The act of killing one's own mother.
Example
The crime of matricide shocked the entire town.
弑母罪震惊了整个城市。
C2 noun /əbˈdʌktər/

abductor

绑架者
Meaning
a person who kidnaps or forcibly takes someone away
Example
The police arrested the abductor after a nationwide search.
警方在长时间搜查后逮捕了绑架者。
C2 noun /dɪˈprævɪti/

depravity

堕落
Meaning
moral corruption; wickedness
Example
The film portrays the moral depravity of a corrupt society.
这部电影描绘了腐化社会的道德堕落。
C2 noun /ˈpær.ɪ.saɪd/

parricide

弑亲
Meaning
The act of killing one's father, mother, or other close relative.
Example
The court tried him for parricide after the tragic incident.
法院在悲剧事件后以弑亲罪审判了他。
C2 noun /ˈɡævəl/

gavel

法槌
Meaning
A small ceremonial mallet used by a judge or an auctioneer to signal attention or mark a decision.
Example
The judge struck the gavel to call the court to order.
法官敲打法槌以召集法庭秩序。
C2 noun /ˈpjuːɪsəns/

puissance

权力
Meaning
Great power, strength, or influence.
Example
The empire showed its puissance through vast armies.
帝国通过庞大的军队展现了其权力。
C2 noun /ˈɛmɪsɛri/

emissary

特使
Meaning
A person sent on a special mission, usually as a diplomatic representative.
Example
The king sent an emissary to negotiate peace.
国王派遣了一名特使去谈判和平。
C2 noun ˈbaɪəʊˌsaɪd

biocide

生物杀灭剂
Meaning
A chemical substance or microorganism intended to destroy, deter, render harmless, or exert a controlling effect on any harmful organism.
Example
Biocides help control pests and reduce the spread of diseases.
生物杀灭剂帮助控制害虫，并减少疾病传播。
C2 adjective /ˌɪnfɪnɪˈtɛsɪməl/

infinitesimal

微不足道
Meaning
Extremely small in size or amount; so tiny as to be almost negligible.
Example
The error was so infinitesimal that it didn’t affect the results.
这个错误如此微不足道，以至于没有影响结果。
C2 verb /ˈɡæmbəl/

gambol

开心地跳跃
Meaning
to run or jump about playfully
Example
The lambs gamboled in the field under the sun.
小羊在阳光下在田野里欢快地跳跃。
C2 adjective ˌɪn.ɪ.fɪˈkeɪ.ʃəs

inefficacious

无效
Meaning
Not producing any or the desired effect; ineffective.
Example
The treatment was inefficacious in curing the disease.
该治疗对治愈疾病无效。
C2 adjective /lʌɡˈʒʊəriənt/

luxuriant

繁茂的
Meaning
abundant in growth or richly abundant
Example
The luxuriant forest was teeming with life.
繁茂的森林充满了生命。
C2 noun /ˌeɪd də ˈkæmp/

aide-de-camp

军官，担任高级军官的机密助手
Meaning
A military officer acting as a confidential assistant to a senior officer.
Example
The general was accompanied by his aide-de-camp during the ceremony.
在仪式期间，军官与他的随行军官共同出席。
C2 adverb /ɪkˈstem.pɔːr/

Extempore

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

hydrometer

Meaning
An instrument used to measure the density or specific gravity of liquids.
Example
The brewer used a hydrometer to test the sugar content of the solution.
C2 adjective /ˈnɪɡərdli/

niggardly

小气
Meaning
unwilling to spend or give; stingy or miserly
Example
He was too niggardly to leave a decent tip.
他太小气，舍不得给个体面的小费。
C2 noun /ˈsɪŋ.krə.ni/

synchrony

同步性
Meaning
Coordination in time, harmony in action or movement.
Example
Their dance performance showed perfect synchrony.
他们的舞蹈表演展示了完美的同步性。
C2 noun /kəˈlɒsəti/

callosity

粗厚的皮肤
Meaning
A thickened or hardened area of skin; insensitivity or hardness of character.
Example
Years of manual labor left callosity on his hands.
多年的体力劳动使他的手上留下了厚皮。
C2 noun /ɡleɪd/

glade

林中的空地
Meaning
An open space in a forest or woods.
Example
They rested in a sunny glade after their long hike.
他们在长途跋涉后，在一个阳光明媚的空地上休息。
C2 noun /ˌæbnɪˈɡeɪʃən/

abnegation

自我否定
Meaning
the act of renouncing or rejecting something, especially self-denial
Example
The monk’s life was one of complete abnegation of worldly pleasures.
僧侣的生活是对世俗快乐的完全自我否定。
C2 verb /əˈdʒʌdʒ/

adjudge

裁决
Meaning
to consider or declare officially in a legal or formal manner
Example
He was adjudged guilty by the court.
他被法院判定有罪。
C2 adjective /ˈbɛərˌfeɪst/

barefaced

厚颜无耻
Meaning
shameless and undisguised; openly bold or unashamed
Example
He told a barefaced lie in front of everyone.
他在大家面前说了个厚颜无耻的谎言。