convalesce
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C2 verb /ˌkɒnvəˈlɛs/

convalesce

恢复健康，在疾病或治疗后恢复力量
Meaning
to recover health and strength after illness or medical treatment
Example
After the surgery, she spent several weeks convalescing at home.
手术后，她在家里恢复了几个星期。
C2 noun /ˈkɒd.ɪ.sɪl/

codicil

遗嘱附录
Meaning
a legal document that makes changes or additions to an existing will
Example
He added a codicil to his will to include his granddaughter.
他在遗嘱中添加了一份附录，以包括他的孙女。
C2 noun /ˈmɛtəl/

mettle

勇气
Meaning
A person's ability to cope well with difficulties or to face demanding situations with courage.
Example
The young athlete showed his mettle in the final match.
这位年轻的运动员在决赛中展示了他的勇气。
C2 adjective /ɪmˈprɛɡnəbl̩/

impregnable

固若金汤
Meaning
Unable to be captured, broken into, or defeated.
Example
The fortress was considered impregnable by the enemy.
敌人认为这个堡垒固若金汤。
C2 noun /ˈsuːθˌseɪər/

soothsayer

预言家
Meaning
a person who claims to predict the future
Example
The king consulted a soothsayer before going to war.
国王在出征前咨询了一个算命师。
C2 verb, noun /ˈkweɪvər/

quaver

颤抖
Meaning
To shake or tremble in speaking, typically through nervousness or emotion.
Example
Her voice quavered as she spoke before the crowd.
她的声音在讲话时颤抖，尤其是在人群面前。
C2 noun /dɪsˈjuːnjən/

disunion

分裂
Meaning
the state of being separated or not united
Example
Civil wars often result from national disunion.
内战通常由国家分裂引发。
C2 adjective /ˈræfɪʃ/

raffish

不拘一格且稍微不太体面但又很有吸引力
Meaning
unconventional and slightly disreputable but attractive
Example
He had a raffish charm that made him popular in the city.
他有一种迷人的雷菲什魅力，使他在城市里非常受欢迎。
C2 noun /ˈɑb.lə.kwi/

Obloquy

严厉的批评或言语侮辱；公开谴责
Meaning
harsh criticism or verbal abuse; strong public condemnation
Example
The politician faced obloquy after the scandal.
政治家在丑闻之后遭遇了严厉的批评。
C2 noun /ˈpæn.θi.ɪ.zəm/

pantheism

泛神论
Meaning
The belief that God and the universe are identical, or that everything is a manifestation of God.
Example
Spinoza’s philosophy is often associated with pantheism.
斯宾诺莎的哲学常与泛神论相关联。
C2 noun /ˈæpəplɛksi/

apoplexy

由于中风或极端愤怒而导致的突然失去意识或控制
Meaning
A sudden loss of consciousness or control due to stroke or extreme anger.
Example
The old man nearly had apoplexy when he heard the shocking news.
那位老人听到震惊的消息时差点昏厥。
C2 verb /dʒaɪb/

jibe

讽刺 / 一致
Meaning
to make an insulting remark; to be in agreement or harmony with
Example
His actions did not jibe with his words.
他的行动与他的言辞不符。
C2 adjective /ˌsʌpəzɪˈtɪʃəs/

supposititious

假设的
Meaning
Based on assumption rather than fact; not genuine or authentic.
Example
The story turned out to be supposititious, with no evidence to support it.
这个故事证明是假的，没有证据支持它。
C2 verb /ˌpriːɔːrˈdeɪn/

preordain

预定
Meaning
To decide or determine an outcome in advance, especially by fate or divine will.
Example
They believed their meeting was preordained by destiny.
他们相信他们的相遇是命运注定的。
C2 phrase ˌdʒʊə.rɪs.pruːˈden.ʃəl ˈbentʃ.mɑːk

jurisprudential benchmark

法律标准
Meaning
A legal standard or precedent that serves as a reference point for future legal decisions.
Example
The decision set a jurisprudential benchmark.
这个决定设立了一个法律标准。
C2 adjective /ɪmˈpɛn.ɪ.tənt/

impenitent

不悔
Meaning
Not feeling regret or shame about one's actions.
Example
The criminal remained impenitent after the trial.
犯罪者在审判后依然不悔。
C2 adjective /ˈvɛəriəˌɡeɪtɪd/

variegated

五彩斑斕
Meaning
Having different colors, especially in irregular patches or streaks.
Example
The garden was full of variegated plants.
花園裡充滿了五彩斑斕的植物。
C2 noun /ˈbɛlfri/

belfry

钟楼
Meaning
A bell tower, especially one attached to a church or building.
Example
The church belfry housed a large bronze bell.
教堂的钟楼里有一个大铜钟。
C2 adjective /ˈdɛndrɔɪd/

dendroid

树状的
Meaning
tree-shaped or branching like a tree
Example
The coral has a dendroid structure.
珊瑚有一个树状结构。
C2 noun /ˈliː.vɪŋz/

Leavings

剩余物; 残留物
Meaning
things that have been left behind or remain; remnants or scraps
Example
The leavings from dinner were given to the dog.
晚餐的剩余物被给了狗。
C2 noun /ˌɒstɛnˈteɪʃən/

ostentation

炫耀
Meaning
excessive display of wealth or knowledge intended to attract admiration or envy
Example
The billionaire’s party was full of ostentation and luxury.
亿万富翁的派对充满了炫耀和奢华。
C2 adjective /ɪˈkwɪvəkəl/

equivocal

模棱两可
Meaning
Open to more than one interpretation; ambiguous.
Example
His equivocal answer confused everyone.
他的模棱两可回答让大家困惑。
C2 noun kənˌsep.tʃu.ə.laɪˈzeɪ.ʃən

conceptualization

概念化
Meaning
The process of forming a concept or idea; the process of developing something in the mind.
Example
The conceptualization of renewable cities is groundbreaking.
可再生城市的概念化是革命性的。
C2 verb /ruː/

rue

后悔
Meaning
To feel regret or sorrow about something.
Example
She will rue the day she trusted him.
她将会后悔她信任他那一天。
C2 noun /lɪˈvaɪəθən/

leviathan

巨大海怪
Meaning
a huge sea monster or something very large and powerful.
Example
The ship looked like a leviathan on the horizon.
那艘船在地平线上看起来像一只巨大的海怪。
C2 noun /haɪnd/

Hind

母鹿
Meaning
a female deer, especially a red deer
Example
The hind protected her fawn from predators.
母鹿保护了她的小鹿免受捕食者的伤害。
C2 adjective /ˈfʌsti/

fusty

陈腐的，霉臭的
Meaning
smelling stale, damp, or stuffy; old-fashioned
Example
The room smelled fusty after being closed for months.
房间在关了几个月后有了陈腐的味道。
C2 verb /ˈekspərˌɡeɪt/

expurgate

删改
Meaning
To remove offensive or objectionable parts from a text or speech.
Example
The publisher decided to expurgate the novel before reprinting it.
出版社决定在再版前删改这部小说。
C2 verb /ʃʌk/

shuck

剥壳
Meaning
To remove the outer covering, such as the husk of corn or shell of shellfish.
Example
She learned how to shuck oysters quickly.
她学会了如何快速打开牡蛎。
C2 noun əˈdʒuː.dɪ.kə.tɪv ˈbɒd.i

adjudicative body

裁决机构
Meaning
An official organization that has the authority to judge disputes and make decisions.
Example
The adjudicative body deliberated on the case.
裁定机构对案件进行了审议。
C2 verb /koʊˈæɡjəˌleɪt/

coagulate

凝结
Meaning
to cause a liquid, especially blood, to change into a solid or semi-solid state
Example
The blood quickly coagulated after the cut.
伤口后血液迅速凝结。
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。
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 noun /ˈsiːkənt/

secant

割线
Meaning
A straight line that intersects a curve at two or more points.
Example
In geometry, a secant cuts the circle at two distinct points.
在几何学中，割线在两个不同的点上切割圆形。
C2 adjective /ˈʌŋk.tʃu.əs/

unctuous

阿谀奉承
Meaning
Excessively flattering or ingratiating; oily in texture.
Example
His unctuous tone made everyone uncomfortable.
他那种阿谀奉承的语气让每个人都感到不舒服。
C2 noun /ˌmɑːhəˈrɑːdʒə/

maharaja

马哈拉贾
Meaning
A great king, especially a ruler of one of the principal states in India.
Example
The maharaja lived in a grand palace surrounded by gardens.
马哈拉贾住在一个宏伟的宫殿里，四周是花园。
C2 noun /ˈbʊlrʌʃ/

bulrush

芦苇
Meaning
A tall plant with long leaves that grows in or near water, also known as a cattail.
Example
The pond was surrounded by tall bulrushes swaying in the wind.
池塘被高大的芦苇环绕，随风摇曳。
C2 noun /rɪˈvaɪlər/

reviler

侮辱者
Meaning
a person who criticizes or insults others abusively
Example
He was known as a reviler of all who opposed him.
他以侮辱所有反对他的人而闻名。
C2 noun /ˈɑːrkeɪndʒəl/

archangel

Meaning
A high-ranking angel, often considered a chief messenger or leader among angels.
Example
Michael is often depicted as the most powerful archangel.
C2 adjective /ˈrɛpərəbəl/

reparable

可修复的
Meaning
able to be repaired or fixed
Example
The damage to the car was serious but still reparable.
汽车的损坏很严重，但仍然是可修复的。
C2 noun dʒɛsˌtɪk.jʊˈleɪ.ʃənz

gesticulations

手势
Meaning
Expressive hand or body movements while speaking to convey thoughts or emotions
Example
His energetic gesticulations made the speech more engaging.
他的充满活力的手势使演讲更加引人入胜。
C2 noun /ɪnˈvɛstɪtʃər/

investiture

授职仪式
Meaning
the formal ceremony of conferring authority, rank, or office
Example
The king held an investiture ceremony for the new knight.
国王为新骑士举行了授职仪式。
C2 noun /ˈhɔːrn.bɪl/

Hornbill

角嘴鸟
Meaning
a large tropical bird with a large curved beak and often a horn-like projection
Example
The colorful hornbill perched on the highest branch.
五彩斑斓的霍恩比尔停在了最高的树枝上。
C2 noun /ˈpæk.ɪ.dɜːrm/

pachyderm

具有厚皮的大型哺乳动物
Meaning
a large mammal with thick skin, such as an elephant, rhinoceros, or hippopotamus
Example
The zoo had several pachyderms, including elephants and rhinos.
动物园里有几只厚皮兽，包括大象和犀牛。
C2 adverb, adjective /ˈɡrætɪs/ or /ˈɡreɪtɪs/

gratis

免费
Meaning
Without charge; free of cost.
Example
The drinks at the event were provided gratis.
活动中的饮料是免费的。
C2 noun /ˈvɪtrioʊl/

vitriol

尖刻的批评
Meaning
harsh and bitter criticism
Example
The politician faced vitriol from the public.
政治家遭受了公众的尖刻批评。
C2 noun ˈlɪɡ.nəʊˌsæt

LignoSat

木卫星
Meaning
A wooden satellite that demonstrates the use of wood in space technology.
Example
LignoSat demonstrates the use of wood in space.
LignoSat 展示了木材在太空中的应用。
C2 noun /ˈvɔːdəvɪl/

vaudeville

歌舞杂耍
Meaning
A type of entertainment popular in the early 20th century, featuring a mixture of comedy, song, dance, and variety acts.
Example
The vaudeville show included comedians, magicians, and dancers.
歌舞杂耍表演包括喜剧演员、魔术师和舞者。
C2 noun /maɪˈkrɒmɪtər/

micrometer

千分尺
Meaning
A device used for measuring small distances with great accuracy.
Example
The engineer used a micrometer to measure the thickness of the wire.
工程师使用了一个微米尺来测量电线的厚度。
C2 adjective /ˈpjuːɪsənt/

puissant

强大的
Meaning
having great power or influence; mighty
Example
The king was a puissant ruler whose word was law.
国王是一个强大的统治者，他的话就是法律。
C2 noun /wɪt/

whit

极小的量
Meaning
a very small part or amount
Example
He doesn't care a whit about the outcome.
他一点也不在乎结果。
C2 noun /ˈoʊɡər/

ogre

Meaning
A mythical monster, often depicted as large, hideous, and cruel; metaphorically, a cruel or terrifying person.
Example
The villagers feared the ogre who lived in the dark forest.
C2 noun /ˌhjuː.mɪ.fɪˈkeɪ.ʃən/

humification

腐殖作用
Meaning
The process of organic matter decomposition to form humus in soil.
Example
Humification enhances soil structure and fertility.
腐殖作用增强了土壤的结构和肥力。
C2 noun /prəˈpɪŋkwɪti/

propinquity

亲近
Meaning
the state of being close to someone or something; proximity
Example
The propinquity of their houses made them close friends.
他们房屋的亲近使他们成为了亲密的朋友。
C2 noun /ˈbrɪn.dʒəl/

Brinjal

茄子
Meaning
a large purple vegetable that is white inside; also called eggplant
Example
My mother cooked brinjal curry for lunch.
我妈妈做了茄子咖喱作为午餐。
C2 noun /ˈjuːzjuːfrʌkt/

usufruct

使用权
Meaning
The legal right to use and enjoy the benefits of someone else’s property without owning it.
Example
The tenant had the usufruct of the land but not its ownership.
租户有权使用这片土地，但没有所有权。
C2 noun /ˈstætɪks/

statics

静力学
Meaning
The branch of mechanics dealing with bodies at rest and forces in equilibrium.
Example
She is studying statics as part of her engineering course.
她正在学习静力学，作为她工程课程的一部分。
C2 adjective /ˈlæm.ən.tə.bəl/

lamentable

可悲的
Meaning
deserving to be criticized or regretted; unfortunate
Example
The team’s lamentable performance disappointed their fans.
球队的可悲表现让他们的粉丝失望。
C2 adjective /ˌpɜːrtɪˈneɪʃəs/

pertinacious

固执
Meaning
holding firmly to an opinion, purpose, or course of action; stubbornly persistent
Example
The pertinacious lawyer refused to give up the case.
固执的律师拒绝放弃案件。
C2 noun /ˌklɛptəˈmeɪniæk/

kleptomaniac

有不可抗拒的偷窃冲动的人
Meaning
A person with an irresistible urge to steal, typically without need or profit.
Example
The kleptomaniac was caught shoplifting again.
这个窃盗狂又一次在商店偷东西时被抓住了。
C2 adjective /ˌsæpəˈneɪʃəs/

saponaceous

含肥皂性质的
Meaning
Soapy or having the qualities of soap.
Example
The plant has saponaceous leaves that produce foam when rubbed in water.
这种植物有含肥皂性质的叶子，擦在水中时会产生泡沫。
C2 noun /ˈnɒn.ɪʤ/

Nonage

未成年时期
Meaning
the period of being under the legal age of majority; youth or immaturity
Example
During his nonage, all legal decisions were made by his guardian.
在他未成年时期，所有法律决定都由他的监护人作出。
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。
C2 adjective /ɛmˈpaɪriəl/

empyreal

天国的
Meaning
Heavenly, divine, or relating to the highest heavens.
Example
The poet described the empyreal beauty of the stars.
诗人描述了星星的天国美丽。
C2 noun /lɑːrˈʒes/

largess

慷慨
Meaning
Generosity in giving gifts or money.
Example
The foundation survived thanks to the largess of wealthy donors.
这个基金会得以生存，多亏了富有捐赠者的慷慨。
C2 noun /ˈkoʊ.tə.ri/

coterie

一个小型的、排外的团体
Meaning
a small, exclusive group of people with shared interests
Example
He belonged to a coterie of artists who met every Friday.
他属于一个每周五见面的艺术家团体。
C2 noun /ˈspæŋɡəl/

spangle

亮片
Meaning
A small shiny piece of metal or plastic used for decoration on clothes.
Example
Her dress was covered with silver spangles that glittered in the light.
她的裙子上覆盖着银色的亮片，在光线下闪闪发光。
C2 adjective /ˈtriːkli/

treacly

过度甜美或感伤，就像糖浆一样。
Meaning
Excessively sweet or sentimental, like treacle.
Example
The movie was too treacly for my taste.
这部电影对我的口味来说太甜了。
C2 noun /ˈlɒdʒ.mənt/

lodgment

临时住宿
Meaning
The act of lodging or a place of temporary stay; also a deposit of something.
Example
The soldiers found lodgment in the abandoned house.
士兵们在废弃的房子里找到了临时住宿。
C2 verb /ɛnˈfrænˌtʃaɪz/

enfranchise

幸福
Meaning
To grant the right to vote or other rights of citizenship.
Example
The new law enfranchised thousands of people.
当她收到奖项时，她无法掩饰自己的幸福。
C2 adjective /ˌmɔːrɡəˈnætɪk/

morganatic

摩根婚姻
Meaning
relating to a marriage in which one partner, usually of lower social rank, does not share the titles or privileges of the other
Example
The prince entered into a morganatic marriage with a commoner.
王子与一名平民结婚，成为摩根婚姻。
C2 noun /draɪ ˈmæŋgoʊ ˈpaʊdər/

Dry Mango Powder

阿姆楚尔
Meaning
a tangy powder made from dried raw mangoes, used as a spice in Indian cuisine
Example
The chef sprinkled dry mango powder over the chaat for extra tanginess.
厨师将干芒果粉撒在印度小吃上以增加酸味。
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 noun /ˌsɒ̃ˈfrwɑː/

sangfroid

冷静
Meaning
Composure or coolness under pressure.
Example
She impressed everyone with her sangfroid during the interview.
她在面试中以冷静给大家留下了深刻印象。
C2 verb /ɪˈmɛnd/

emend

修改
Meaning
to correct or revise a text, especially for errors
Example
The editor emended the manuscript before publication.
编辑在出版前修改了手稿。
C2 noun /ˈdʒuː.dɪˌkeɪ.tʃər/

judicature

司法系统
Meaning
the administration of justice or the system of courts
Example
The judicature ensures that laws are fairly applied.
司法系统确保法律得到公正执行。
C2 noun /əˈdɛpt.nəs/

adeptness

熟练和技巧
Meaning
Skill and dexterity in a task.
Example
His adeptness in negotiations helped close the deal successfully.
他在谈判中的熟练帮助成功地完成了交易。
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 adjective /ˈkɒr.ə.ɡeɪ.tɪd/

corrugated

波纹状或折叠的
Meaning
shaped into ridges and grooves; wrinkled or folded
Example
The roof was made of corrugated metal sheets.
屋顶是由波纹状金属板制成的。
C2 noun /ˈhɑːr.bɪn.dʒər/

Harbinger

先兆
Meaning
a person or thing that announces or signals the approach of another; a forerunner of something
Example
The first robin of spring is often considered a harbinger of warmer weather to come.
春天的第一只知更鸟常被认为是即将来临的温暖天气的先兆。
C2 noun /sneɪk ɡɔːrd/

Snake gourd

蛇瓜
Meaning
a long, curved vegetable that resembles a snake, commonly used in South Asian cuisine
Example
The snake gourd grows in a twisted, serpentine shape in the garden.
蛇瓜在花园里以弯曲的蛇形生长。
C2 noun /ˈbuːt.leɪs/

Boot-lace

靴带
Meaning
a cord or string used to fasten a boot or shoe
Example
I need to tie my boot-lace before going for a walk.
我需要在散步前系好我的靴带。
C2 verb /ˈvæsɪleɪt/

vacillate

幸福
Meaning
to waver between different opinions or actions; be indecisive
Example
He vacillated between studying law and becoming a writer.
她在获得奖项时无法掩饰自己的幸福。
C2 adjective /ˈfraɪəbl/

friable

脆弱
Meaning
Easily crumbled or reduced to powder.
Example
The old brick wall was friable and broke apart at a touch.
那堵老砖墙是脆弱的，轻轻一碰就破裂了。
C2 noun /juːˈkeɪs/

ukase

法令
Meaning
An authoritative decree or order, especially one issued by a sovereign or government.
Example
The czar issued a ukase restricting the freedom of the press.
沙皇发布了一项限制新闻自由的法令。
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。
C2 noun ˈfaɪ.təʊˌnjuː.tri.ənts

phytonutrients

植物营养素
Meaning
Bioactive compounds found in plants that have health benefits beyond basic nutrition.
Example
Green tea contains powerful phytonutrients.
绿茶含有强大的植物营养素。
C2 noun /maɪˈæzmə/

miasma

恶臭空气
Meaning
An unpleasant or unhealthy smell or atmosphere.
Example
A miasma of decay hung over the abandoned house.
腐烂的气味弥漫在废弃的房子上方。
C2 verb /ˈmɒtl/

mottle

斑驳
Meaning
To mark with spots or patches of color.
Example
The leaves were mottled with shades of yellow and brown.
叶子上布满了黄色和棕色的斑点。
C2 noun /reɪθ/

wraith

幽灵
Meaning
A ghost or ghostlike image of someone, especially seen shortly before or after their death.
Example
A wraith appeared in the fog near the old castle.
在旧城堡附近的雾中出现了一个幽灵。
C2 verb /ɪkˈspɛktəreɪt/

expectorate

吐痰
Meaning
to cough up and spit out mucus from the throat or lungs
Example
The patient began to expectorate thick mucus.
患者开始吐出厚重的粘液。
C2 adjective /ˈsmɑːrmi/

smarmy

奉承 / 虚伪的礼貌
Meaning
Excessively flattering or ingratiating, often insincerely.
Example
The salesman gave a smarmy pitch that felt fake.
销售员做了一个让人觉得虚假的奉承推销。
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。
C2 adjective /ˈɪmənənt/

immanent

内在的
Meaning
existing or operating within; inherent
Example
He believed that moral values are immanent in human nature.
他相信道德价值在人的本性中是内在的。
C2 noun /ɪˈrʌp.ʃən/

Irruption

突然的暴力入侵; 入侵或突袭; 突如其来的爆发或喷发
Meaning
a sudden violent entry; an invasion or raid; a sudden outburst or eruption
Example
The army's irruption into enemy territory caught the opposing forces completely off guard.
军队的突然闯入敌方领土使对方力量完全措手不及。
C2 noun /tɑːrn/

tarn

山间湖泊
Meaning
A small mountain lake or pool.
Example
We camped near a tranquil tarn in the highlands.
我们在高地附近的一个宁静的山间湖泊旁露营。
C2 noun /ˈaɪdɪl/

idyll

田园诗般的场景
Meaning
An extremely happy, peaceful, or picturesque episode or scene, often idealized.
Example
Their honeymoon was an idyll on a tropical island.
他们的蜜月是在一个热带岛屿上的田园诗般的场景。
C2 adjective /ˈdoʊlfəl/

Doleful

悲伤的; 忧郁的;
Meaning
sorrowful; mournful; expressing grief or sadness
Example
She gave him a doleful look when he left.
当他离开时，她给了他一个悲伤的眼神。
C2 adverb /əˈbæk/

Aback

吃惊的
Meaning
by surprise; unexpectedly
Example
I was taken aback by his sudden announcement.
我被他突然的宣布吓到了。
C2 verb /diːˈlɪmɪt/

delimit

划定
Meaning
to fix the boundaries or limits of something
Example
The treaty was signed to delimit the borders of the two countries.
该条约被签署以划定两国的边界。
C2 noun /ˌvælɪˌtjuːdɪˈnɛəriən/

valetudinarian

疑病症患者
Meaning
A person who is unduly anxious about their health or constantly concerned with minor ailments.
Example
He was regarded as a valetudinarian, always worrying about his health.
他被认为是一个疑病症患者，总是为自己的健康担忧。
C2 adjective /ˈvɪsɪd/

viscid

粘稠
Meaning
Having a thick, sticky consistency.
Example
The sap had a viscid texture that stuck to his hands.
树汁有一种粘稠的质地，粘在他的手上。
C2 verb /pəˈræmbjʊˌleɪt/

perambulate

漫步
Meaning
To walk through or travel around, especially for leisure.
Example
They perambulated the old town, enjoying the sights.
他们在古城漫步，享受着美丽的景色。
C2 adjective /ɪˈlɪmɪtəbl/

illimitable

无限
Meaning
Without limits or bounds.
Example
The universe is often described as illimitable.
宇宙常被描述为无限的。
C2 noun /ˌhæŋ.ər ˈɒn/

hanger-on

跟班
Meaning
a person who spends time with a powerful or famous person to gain benefits.
Example
The celebrity was always surrounded by hangers-on.
这位名人总是被跟班围绕着。
C2 noun /ˈɔːɡjʊri/

augury

预兆
Meaning
A sign or omen that is believed to predict future events.
Example
The dark clouds were seen as an augury of an approaching storm.
黑云被视为即将到来的风暴的预兆。
C2 verb /ˈdæli/

dally

浪费时间
Meaning
To act or move slowly; to waste time; also to engage in a casual romantic relationship.
Example
He dallied in the garden instead of starting his work.
他在花园里浪费时间，而不是开始工作。
C2 noun /miːn/

mien

神态
Meaning
A person's appearance or manner, especially as an indication of their character or mood.
Example
His serious mien made everyone fall silent.
他严肃的神态让所有人都沉默了。
C2 noun /mjuːˈnɪfəsəns/

munificence

慷慨
Meaning
great generosity or lavish giving
Example
The hospital was built thanks to the munificence of a wealthy donor.
医院的建成得益于一位富有捐赠者的慷慨。
C2 adjective /ˈtræktəbəl/

tractable

容易控制或影响
Meaning
easy to control or influence
Example
The child was surprisingly tractable during the long journey.
那个孩子在漫长的旅程中出奇的容易控制。
C2 verb /ˌaʊtməˈnuːvər/

outmaneuver

巧妙地战胜
Meaning
to gain an advantage over an opponent by skillful or clever action
Example
The smaller company managed to outmaneuver its larger rival.
小公司成功地战胜了它的大对手。
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 /ˌdɪfəˈrɛnʃə/

differentia

区分特征
Meaning
A distinguishing characteristic that sets one thing apart from another.
Example
The differentia of humans is their ability to reason abstractly.
人类的区分特征是他们的抽象思维能力。
C2 noun /ˈɛpəʊd/

epode

一种抒情诗的形式
Meaning
A form of lyric poem written in couplets, often following a strophe and antistrophe in classical Greek poetry.
Example
The poet concluded his ode with a striking epode.
诗人以一个令人印象深刻的艾波德结束了他的颂歌。
C2 noun /ˈlɪθəˌɡræf/

lithograph

石版画 (石头印刷)
Meaning
a print made by lithography, often artistic
Example
The museum displayed a rare lithograph from the 19th century.
博物馆展示了一幅19世纪的稀有石版画。
C2 noun /ˈkʌvi/

covey

一小群鸟
Meaning
a small group of birds, especially partridges or quails
Example
A covey of quails flew across the field.
一群鹌鹑飞过了田野。
C2 noun /ˌkɒzməˈpɒlɪtənɪzəm/

cosmopolitanism

国际主义
Meaning
the ideology that all human beings belong to a single community
Example
Cosmopolitanism promotes respect and understanding across cultures.
国际主义促进不同文化之间的尊重和理解。
C2 noun /ˌmjuːlˈtɪər/

muleteer

骡夫
Meaning
a person who drives or takes care of mules
Example
The muleteer guided the animals safely across the mountain path.
骡夫安全地将动物引导过山路。
C2 noun /ˈlæŋɡər/

languor

倦怠
Meaning
A state of tiredness, inertia, or dreamy relaxation.
Example
The hot afternoon filled her with languor.
炎热的下午让她感到疲倦。
C2 noun /dɪˈspɔɪlər/

despoiler

掠夺者
Meaning
A person who robs, plunders, or violently takes things from others.
Example
The despoilers left the city in ruins.
掠夺者让城市变成废墟。
C2 verb /slʌf/ or /sluː/

slough

脱皮 / 沼泽区
Meaning
To shed or cast off (like dead skin); also a swampy or muddy area.
Example
The snake sloughed off its old skin.
蛇脱掉了它的旧皮肤。