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C1 verb /ˈstriːm.laɪn/

streamline

简化或提高效率
Meaning
To make a process simpler and more efficient.
Example
The company aims to streamline production to reduce costs.
公司旨在简化生产以降低成本。
A2 noun /flaɪt/

flight

航班 / 航班
Meaning
the act of flying, typically through the air; or a scheduled trip by an aircraft
Example
Our flight to London was delayed due to bad weather.
我们飞往伦敦的航班因恶劣天气而延误。
B1 adverb /ˈpriːviəsli/

previously

以前
Meaning
at an earlier time or before now
Example
She had previously worked at a bank before starting her own business.
她曾在银行工作过，之后才开始了自己的生意。
C1 adjective /rɪˈpres.ɪv/

Repressive

压制性的
Meaning
restraining freedom or preventing self-expression; oppressive
Example
The repressive government banned all forms of protest.
压制性的政府禁止了所有形式的抗议。
C2 adjective /ˈhæm ˌhændɪd/

ham-handed

笨拙
Meaning
clumsy or inept in handling things or situations
Example
His ham-handed attempt to fix the computer made it worse.
他笨拙的修理电脑的尝试反而使情况更糟。
B2 verb /ˈjuːtɪlaɪz/

utilize

利用
Meaning
to make practical or effective use of something
Example
The company aims to utilize solar energy for production.
公司旨在利用太阳能进行生产。
C2 adjective /ˈprəʊ.lɪks/

prolix

过于冗长
Meaning
using too many words; tediously lengthy
Example
The professor’s prolix lecture put many students to sleep.
教授冗长的讲座让许多学生打瞌睡。
C1 noun /kwɪnˈtɛt/

quintet

五重奏
Meaning
A group of five people or things, especially musicians.
Example
The jazz quintet performed beautifully.
爵士五重奏演奏得非常美妙。
C2 noun /θiˈɒsəfi/

theosophy

神智学
Meaning
A religious or philosophical belief system that seeks direct knowledge of the mysteries of life and the divine.
Example
Theosophy attracted people interested in mysticism and spiritual growth.
神智学吸引了对神秘主义和精神成长感兴趣的人们。
B2 noun /ˈɔːɡənɪzəm/

organism

有机体
Meaning
a living thing that has an organized structure and can grow and reproduce
Example
Every organism needs water to survive.
每个有机体都需要水才能生存。
A1 adjective /əˈfreɪd/

afraid

害怕
Meaning
feeling fear or anxiety; worried that something undesirable will happen
Example
She was afraid of the dark.
她害怕黑暗。
B2 adjective /prəˈpoʊzd/

proposed

提议的
Meaning
suggested or put forward for consideration or discussion
Example
The proposed changes will improve the system.
提议的变更将改善系统。
B2 noun /ˈʌndərˌteɪkɪŋ/

undertaking

事业
Meaning
A task, project, or responsibility that someone agrees to do.
Example
Starting a new company is a difficult undertaking.
创办新公司是一项艰巨的事业。
B2 verb /ˈrʌm.bəl/

rumble

幸福
Meaning
to make a continuous deep, resonant sound
Example
Thunder rumbled in the distance.
当她收到奖项时，她无法隐藏自己的幸福。
A2 adjective /ˈiː.stərn/

Eastern

东方的
Meaning
relating to or situated in the east; from or characteristic of the eastern part of the world
Example
She studied Eastern philosophy at the university.
她在大学学习东方哲学。
B2 noun /ˌmɪsbɪˈheɪvjər/

misbehavior

不当行为
Meaning
bad or improper behavior
Example
The teacher punished the student for his misbehavior.
老师因学生的不当行为而惩罚了他。
B2 noun /ˈæktɪˌvɪzəm/

activism

行动主义
Meaning
The policy or action of using vigorous campaigning to bring about political or social change.
Example
Her environmental activism inspired many young people to take action.
她的环保行动主义激励了许多年轻人采取行动。
C2 verb /ɪmˈpjuːn/

impugn

Meaning
to dispute the truth, validity, or honesty of a statement or motive
Example
The lawyer tried to impugn the credibility of the witness.
B1 noun/adjective /ˌæfrɪkən əˈmɛrɪkən/

african-american

非洲裔美国人
Meaning
A person of African descent living in or originating from the United States; relating to such people.
Example
She is proud of her African-American heritage.
她为自己的非洲裔美国人身份感到自豪。
B2 adjective /ˈrest.ləs/

Restless

焦虑不安
Meaning
unable to rest or relax; constantly moving or fidgeting
Example
The child was restless during the long car journey.
孩子在长时间的车程中坐立不安。
B2 noun /ˈtɜːrkwɔɪz/

turquoise

绿松石
Meaning
a greenish-blue color or gemstone
Example
She wore a necklace with a beautiful turquoise stone.
她戴着一条美丽的绿松石项链。
C2 verb /dɪˈkæmp/

decamp

逃跑
Meaning
To depart suddenly or secretly, often to avoid trouble or escape.
Example
The thief decamped before the police arrived.
小偷在警察到达之前就逃走了。
C1 noun /ˈmʌs.tərd siːdz/

Mustard seeds

芥菜种子
Meaning
small round seeds from the mustard plant, used as a spice and for making mustard condiment
Example
Mustard seeds are often tempered in hot oil to release their nutty flavor before adding to dishes.
芥菜种子常常在热油中炒制，释放它们的坚果味道，然后加入菜肴中。
B2 adjective /kənˈvɜːrtəbl/

convertible

敞篷车, 有可折叠车顶的汽车
Meaning
able to be changed into a different form or use; also a car with a roof that can be folded down
Example
She drove her new convertible along the coastal road.
她开着她的新敞篷车沿着海岸公路行驶。
C1 verb /kənˈstrɪkt/

constrict

收缩
Meaning
to make narrower or tighter; to shrink or compress
Example
The snake constricted its prey before swallowing.
蛇在吞噬之前把猎物收缩了。
B1 noun /ˈfæktər/

factor

因素
Meaning
A circumstance, fact, or influence that contributes to a result.
Example
Weather is an important factor in crop production.
天气是作物生产中的一个重要因素。
B2 adjective /ˈlɔːŋtaɪm/

longtime

长期的
Meaning
having existed or continued for a long time
Example
They are longtime friends who met in college.
他们是大学时认识的长期朋友。
B1 verb /dɪˈfiːt/

Defeat

失败
Meaning
to win a victory over; to overcome in battle or competition
Example
The army managed to defeat the enemy forces.
军队成功击败了敌军。
B2 adverb /əˈfek.ʃən.ət.li/

Affectionately

亲切地
Meaning
in a way that shows feelings of liking or love; with fondness and care
Example
She hugged her grandmother affectionately.
她温柔地拥抱了她的祖母。
B2 noun /mɑːrz/

Mars

火星
Meaning
The fourth planet from the Sun; the Roman god of war
Example
Scientists are planning a manned mission to Mars in the next decade.
科学家们正在计划在下一个十年进行载人火星任务。
C2 adjective /voʊˈsɪfərəs/

vociferous

喧闹
Meaning
expressing feelings or opinions in a loud and forceful way
Example
The vociferous crowd demanded justice.
喧闹的人群要求正义。
C2 noun /ˈævərɪs/

avarice

贪婪
Meaning
extreme greed for wealth or material gain
Example
His avarice led him to exploit his workers.
他的贪婪导致他剥削工人。
C1 adjective /ˌɪndɪˈvɪzəbl/

indivisible

Meaning
Not able to be divided or separated.
Example
The country's unity was indivisible despite differences.
A2 adjective /duː/

Due

到期的; 预计的; 安排好的
Meaning
owed as a debt; expected at a certain time; scheduled
Example
The assignment is due tomorrow.
作业明天到期。
C2 adjective /ɪnˈkɒntɪnənt/

incontinent

失禁
Meaning
lacking control over urination or defecation; lacking self-restraint
Example
The patient was incontinent after surgery.
病人在手术后失禁。
C2 noun /ˈplɛdʒiː/

pledgee

被作为担保而给与某物的人
Meaning
a person to whom something is pledged or given as security
Example
The bank is the pledgee of the collateral until the loan is repaid.
银行是担保品的债权人，直到贷款偿还为止。
C1 adjective /rɪˈsɜːrdʒənt/

resurgent

复兴的
Meaning
Becoming strong, active, or popular again.
Example
The resurgent economy gave hope to many businesses.
复兴的经济给许多企业带来了希望。
A2 adjective /əˈsliːp/

asleep

熟睡
Meaning
in a state of sleep
Example
The baby is fast asleep.
宝宝正在熟睡。
B1 noun /ˈɛər.kræft/

aircraft

飞机
Meaning
A vehicle, such as an airplane or helicopter, that can fly in the air.
Example
The military aircraft flew over the city.
军用飞机飞越了城市。
C2 verb /ˌnɒnˈplʌst/

nonplussed

困惑
Meaning
Past tense of nonplus; surprised and unsure how to react.
Example
He stood nonplussed at the strange remark.
他对奇怪的评论感到困惑。
B2 adverb /ˈænjuəli/

annually

每年一次
Meaning
once every year; yearly
Example
The company holds a general meeting annually.
公司每年举行一次全体会议。
C1 verb /fɔːrˈɡoʊ/

forgo

放弃
Meaning
to decide not to do or have something
Example
She decided to forgo dessert to maintain her diet.
她决定放弃甜点以保持她的饮食。
C1 noun ˌrɛk.əˈlɛk.ʃən

Recollection

回忆
Meaning
Remembering past events or information
Example
His recollection of childhood memories was vivid.
他对童年记忆的回忆很生动。
C2 verb /ˌkaʊˈtaʊ/

kowtow

过度顺从
Meaning
To act in an excessively subservient or obedient manner.
Example
He refused to kowtow to the unreasonable demands.
他拒绝顺从不合理的要求。
C2 verb /dɪsˈteɪn/

distain

鄙视
Meaning
to treat with scorn or contempt (archaic form of disdain)
Example
He would never distain those who had less fortune than him.
他从未鄙视那些比他更不幸运的人。
B2 adjective /ˈwʊd biː/

Would-be

有前途的; 可能的;
Meaning
prospective; intending to be; aspiring
Example
The would-be actor practiced his lines every day.
这个有前途的演员每天都在练习台词。
B1 noun ˈstrʌɡ.əl

struggle

斗争
Meaning
A forceful or violent effort to get free of restraint or resist attack; a determined effort under difficult circumstances.
Example
The struggle for independence united the nation.
独立斗争使国家团结。
B1 verb /beɪð/

bathe

洗澡
Meaning
to wash oneself; to clean the body with water
Example
I bathe every morning before going to work.
我每天早上上班前洗澡。
C2 noun /ˌhaɪdroʊˈfoʊbiə/

hydrophobia

恐水症
Meaning
Extreme or irrational fear of water; historically, another name for rabies.
Example
After being bitten by a stray dog, the man was treated for hydrophobia.
在被流浪狗咬伤后，该男子接受了对水恐症的治疗。
C2 adjective /ˈkwɛrʊləs/

querulous

抱怨的
Meaning
Complaining in a whining or irritable manner.
Example
The querulous customer kept finding fault with every detail.
那个抱怨的顾客一直在找每个细节的错误。
C2 verb /əˈfaɪəns/

affiance

订婚
Meaning
to promise or pledge marriage; to formally engage
Example
They decided to affiance after years of friendship.
多年友谊之后，他们决定订婚。
C1 verb /ˈplʌm.ɪt/

plummet

快速垂直下落
Meaning
to fall straight down at high speed
Example
Stock prices plummeted after the sudden market crash.
股票价格在突如其来的市场崩盘后急剧下跌。
B1 adjective ˈpræktɪkəl

practical

实际的
Meaning
Concerned with actual use rather than theory; realistic and sensible.
Example
A practical approach is needed for solving complex problems.
解决复杂问题需要实际的办法。
C1 noun /ˈpleɪn.tɪf/

Plaintiff

原告
Meaning
a person who brings a case against another in a court of law; the person who initiates a lawsuit
Example
The plaintiff filed a lawsuit against the company.
原告对公司提起了诉讼。
B2 verb /ˈskroʊlɪŋ/

scrolling

滚动
Meaning
Moving through content on a screen by sliding up or down.
Example
Scrolling through feeds wastes a lot of time.
在信息流中滚动浪费了很多时间。
C2 adjective /ˈkɔːpjʊlənt/

corpulent

肥胖的, 胖
Meaning
fat or obese; having a large bulky body
Example
The corpulent man struggled to fit into the small chair.
那个肥胖的男人努力地坐进了小椅子。
A1 adjective /rɒŋ/

wrong

错误
Meaning
not correct or true; mistaken
Example
It is wrong to cheat on a test.
在考试中作弊是错误的。
B2 adjective /blʌnt/

blunt

钝的，直率的
Meaning
not sharp; direct and straightforward in speech
Example
Her blunt remarks offended some people.
她直率的评论冒犯了某些人。
A1 adverb /ˈver.i/

Very

非常; 极其; 十分
Meaning
to a high degree; extremely; greatly
Example
She is very intelligent and works very hard.
她非常聪明，工作非常努力。
C1 verb /ɪˈnjuːməˌreɪt/

enumerate

列举
Meaning
to mention things one by one; to list or count
Example
She enumerated the reasons for her decision.
她列举了做出决定的理由。
A1 noun /bɔɪ/

boy

男孩
Meaning
a male child or young male person
Example
The boy ran across the playground.
那个男孩跑过了操场。
B2 adjective /ˈɪɡ.nər.ənt/

Ignorant

无知
Meaning
lacking knowledge or awareness; uninformed
Example
She was ignorant about the new technology trends.
她对新技术趋势一无所知。
C2 noun /ɪnˈsɪɡniə/

insignia

徽章
Meaning
A badge or symbol that shows rank, position, or membership.
Example
The soldier proudly wore the insignia of his regiment.
士兵自豪地佩戴着他团的徽章。
B2 adjective /boʊld/

Bold

大胆; 自信; 勇敢
Meaning
brave; confident; daring
Example
He made a bold decision to start his own business.
他做出了大胆的决定，开始了自己的生意。
C1 verb /ʃʌnt/

shunt

转轨
Meaning
to move or turn aside; to push or divert from one track to another
Example
The train was shunted onto a different track.
火车被调到另一条轨道。
C2 adjective /ˈmiːliˌmaʊðd/

mealymouthed

含糊其辞
Meaning
not willing to speak directly and honestly; evasive in speech
Example
The politician gave a mealymouthed response to the tough question.
那位政治家对这个难题的回答含糊其辞。
B2 adjective /ˈfeɪtl/

fatal

致命的
Meaning
causing death; leading to disaster
Example
The accident proved fatal for the driver.
事故对司机来说是致命的。
C2 noun /ˈkʌvən/

coven

女巫集会
Meaning
a group or gathering of witches
Example
The witches met secretly in a coven in the forest.
女巫们在森林中的一个女巫集会中悄悄聚集。
C1 noun ˌæp.əˈreɪ.təs

apparatus

设备
Meaning
The technical equipment or machinery needed for a particular activity or purpose.
Example
The apparatus was designed to be eco-friendly.
该设备设计为环保型。
B2 adjective /ɪnˈstrʌkʃənəl/

instructional

教学的
Meaning
providing knowledge or information; intended to teach
Example
The website offers many instructional videos for beginners.
该网站提供许多教学视频，适合初学者。
B2 adjective /əˈsɜːr.tɪv/

Assertive

果断的; 自信的
Meaning
confident and forceful; having a strong personality
Example
She is very assertive when speaking in meetings.
她在会议中发言时非常果断。
A2 noun /ˈkʌm.fərt/

Comfort

舒适; 安逸
Meaning
a state of physical ease and freedom from pain or constraint; relief from distress or anxiety
Example
The soft sofa provided great comfort after a long day at work.
柔软的沙发在长时间工作后提供了极大的舒适感。
B2 adjective /ˈsteɪʃəˌneri/

stationary

静止
Meaning
Not moving or not intended to be moved.
Example
The car remained stationary at the red light.
汽车在红灯前保持静止。
C2 adjective /kəˈrɛlətɪv/

correlative

相关的
Meaning
having a mutual relationship; corresponding
Example
The increase in temperature is correlative with the melting of glaciers.
温度的升高与冰川的融化有关。
B2 verb /mɒk/

mock

嘲笑
Meaning
To make fun of someone or something in a cruel or unkind way.
Example
The students mocked his accent during class.
学生们在课堂上嘲笑他的口音。
C2 verb /ˌmɪskənˈsiːv/

misconceive

误解
Meaning
To misunderstand or form an incorrect idea about something.
Example
He misconceived the purpose of the project.
他误解了项目的目的。
C1 noun /ˈpoʊlstər/

pollster

民意调查员
Meaning
a person or organization that conducts surveys to gauge public opinion
Example
The pollster predicted a close election outcome.
民意调查员预测了一个接近的选举结果。
B2 verb /ˌoʊvərˈsiː/

oversee

监督
Meaning
to supervise or watch over something; to manage and direct
Example
The manager will oversee the entire construction project.
经理将监督整个建筑项目。
B2 noun /ˈliːf.lət/

Leaflet

传单; 宣传单
Meaning
a printed sheet of paper containing information or advertising and usually distributed free
Example
She handed out leaflets about the environmental campaign.
她分发了有关环保运动的传单。
C2 adjective /dɪˈskrɛpənt/

discrepant

不一致的
Meaning
showing a difference or inconsistency
Example
The witnesses gave discrepant accounts of the incident.
目击者给出了与事件不一致的陈述。
C2 noun /ˈdɛswɪˌtuːd/

desuetude

废弃
Meaning
a state of disuse or inactivity
Example
The old law has fallen into desuetude.
旧法律已经废弃。
B2 adjective /kənˈsɪd.ər.ɪt/

Considerate

体贴; 体贴入微
Meaning
showing careful thought about the feelings or wishes of others; thoughtful
Example
He is always considerate of others' feelings.
他总是考虑到别人的感受。
C2 noun /ˌɪntərˈlɒkjətər/

interlocutor

对话者
Meaning
a person who takes part in a conversation or dialogue
Example
She was a skilled interlocutor during the debate.
她在辩论中是一个熟练的对话者。
C2 adjective /əˈluːsɪv/

allusive

含蓄的
Meaning
Making indirect references or hints; suggestive without being explicit.
Example
The novel is full of allusive passages that point to classical literature.
这本小说充满了含蓄的段落，指向经典文学。
C2 noun /ˈdoʊneɪtər/

donator

捐赠者
Meaning
A person who gives something, especially money or goods, as a donation.
Example
The donator wished to remain anonymous after contributing a large sum.
捐赠者在捐赠了一大笔钱后希望保持匿名。
B1 adjective /ʌnˈmærid/

unmarried

未婚
Meaning
Not married; single.
Example
He is thirty-five and still unmarried.
他三十五岁，仍然未婚。
C1 adjective /ˈspjʊəriəs/

spurious

虚假的 / 假冒的
Meaning
Not genuine, authentic, or true; false or fake.
Example
The report was based on spurious claims.
报告基于虚假的声明。
C1 adjective /ˈsɛnʃuəs/

sensuous

感官的
Meaning
Relating to or affecting the senses rather than the intellect; pleasing to the senses.
Example
The garden was filled with sensuous colors and fragrances.
花园里充满了感官的色彩和香气。
C2 noun /ˌɛpɪzəʊˈɒtɪk/

epizootic

动物疫病
Meaning
An outbreak of disease affecting many animals of one kind at the same time.
Example
The farmer feared an epizootic might wipe out his cattle.
农民担心动物疫病会消灭他的家畜。
B2 noun /plænˈteɪʃən/

plantation

种植园
Meaning
a large area of land where crops are grown, often for commercial purposes
Example
The sugarcane plantation stretched for miles across the valley.
甘蔗种植园沿着山谷延伸数英里。
B2 adjective /ˌsuː.pəˈfɪʃ.əl/

superficial

表面
Meaning
Existing or occurring at or on the surface; not thorough or deep.
Example
His understanding of the subject was rather superficial.
他对这个主题的理解相当表面。
B1 noun /ˈpɒlɪtɪks/

politics

政治
Meaning
activities related to the governance of a country or area, especially the debate between parties having power
Example
Politics often involves making difficult decisions.
政治通常涉及做出艰难的决策。
B2 verb /plʌndʒ/

plunge

迅速跳入或潜水；突然下降
Meaning
to jump or dive quickly; to fall sharply
Example
She plunged into the swimming pool.
她跳进了游泳池。
B2 noun /ˈstɑːrtər/

starter

开始某事的人或事物；一餐的第一道菜
Meaning
a person or thing that starts something; the first course of a meal
Example
The starter of the meal was a fresh salad.
餐前小吃是一份新鲜的沙拉。
C1 noun /ˈtɪt.bɪt/

Titbit

一小块美味的食物; 一小段有趣的信息
Meaning
a small piece of tasty food; a small interesting piece of information
Example
She served delicious titbits at the party.
她在派对上提供了美味的小吃。
B1 adjective /ˈkɒn.fɪ.dənt/

Confident

自信的; 确信的; 有信心的
Meaning
self-assured; certain; having belief in one's abilities
Example
She felt confident about her performance in the exam.
她对自己在考试中的表现充满信心。
B2 noun /pəˈnɪn.sjə.lə/

Peninsula

半岛
Meaning
a piece of land that is almost completely surrounded by water but connected to the mainland
Example
The Korean Peninsula is located in East Asia.
朝鲜半岛位于东亚。
C2 adjective /ˈɡlɑːbjələr/

globular

球形的
Meaning
Having the shape of a globe; spherical.
Example
The scientist studied the globular cluster of stars.
科学家研究了球状星团。
B2 noun /ˈkreɪ.dəl/

Cradle

摇篮
Meaning
a small bed for a baby, especially one that rocks from side to side
Example
The baby sleeps peacefully in the cradle.
婴儿在摇篮里安静地睡觉。
C1 adjective /ˈkæl.əs/

Callous

冷酷的; 无情的; 残忍的
Meaning
showing or having an insensitive and cruel disregard for others; emotionally hardened
Example
He showed a callous disregard for others' feelings.
他表现出对他人感情的冷酷蔑视。
C1 noun /ɪnˈfjuːʒən/

infusion

草药注入
Meaning
the act of introducing something into another; a drink made by steeping leaves or herbs in liquid
Example
She prepared a calming infusion of chamomile tea.
她准备了一杯舒缓的洋甘菊茶注入。
B1 verb /dɪˈtɜːrmɪn/

determine

确定
Meaning
to decide; to find out exactly
Example
We must determine the cause of the problem.
我们必须确定问题的原因。
C1 verb /ɛmˈbɛzəl/

embezzle

Meaning
to steal or misuse money or property entrusted to one's care
Example
The accountant was arrested for embezzling company funds.
C1 noun /ˈkjuːmɪn/

Cumin

孜然
Meaning
A spice made from the dried seeds of a plant in the parsley family, with a warm earthy flavor
Example
Cumin is an essential spice in Indian and Middle Eastern cooking.
孜然是印度和中东烹饪中的一种基本香料。
C2 adjective /rɪˈzɪstləs/

resistless

无法抗拒
Meaning
Impossible to resist; having an overpowering effect.
Example
She felt a resistless urge to laugh at the joke.
她感到无法抗拒的冲动，忍不住笑出声。
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。
B2 noun /kənˈsɪstənsi/

consistency

一致性, 连贯性
Meaning
The quality of always behaving or performing in a similar way; uniformity.
Example
Consistency in quality is key to customer satisfaction.
质量的一致性是客户满意的关键。
C1 verb /ˈtɒpl/

topple

倒塌
Meaning
to fall or cause to fall over; to overthrow
Example
The earthquake caused the old building to topple.
地震导致了旧建筑的倒塌。
C2 noun /rɪˈvaɪ.zəl/

revisal

修订
Meaning
The act of revising, reviewing, or making changes to something.
Example
The revisal of the contract took longer than expected.
合同的修订比预期花费了更多时间。
B2 verb /rɪˈvɜːs/

reverse

反转
Meaning
to change something to the opposite direction, position, or result
Example
She quickly reversed the car out of the driveway.
她迅速把车从车道上倒了出来。
B2 noun /həˈraɪ.zən/

horizon

地平线
Meaning
the line where the earth seems to meet the sky; the limit of one's knowledge, experience, or interest
Example
The sun disappeared below the horizon.
太阳消失在地平线下。
C2 noun /ˌdiːlɛkˈteɪʃən/

delectation

愉悦
Meaning
great pleasure or delight
Example
She read the story aloud for the delectation of her friends.
她大声朗读故事，以供朋友们的愉悦。
C2 noun /pəˈnʌmbrə/

penumbra

部分阴影
Meaning
a partially shaded area around the shadow of an object, especially during an eclipse
Example
The moon’s penumbra created a dim shadow over the Earth.
月亮的阴影带在地球上创造了一个微弱的阴影。
C1 noun /ˈlɪŋɡwɪst/

linguist

语言学家
Meaning
A person skilled in foreign languages or in the scientific study of language.
Example
She is a linguist who speaks six languages fluently.
她是一位能流利讲六种语言的语言学家。
C1 verb /ʌnˈsɛtl/

unsettle

扰乱
Meaning
To disturb or make someone feel anxious or uneasy.
Example
The sudden news unsettled the entire community.
突如其来的消息让整个社区感到不安。
C2 noun /kəˈraʊzl/

carousal

喧闹的聚会
Meaning
A noisy or lively drinking party or festivity.
Example
They were exhausted after a night of wild carousal.
他们在一晚狂欢的喧闹聚会后感到筋疲力尽。
B1 noun /tɜːmz/

terms

条款
Meaning
plural of term; conditions or rules in a contract or agreement
Example
The terms of the agreement are clearly outlined in the contract.
协议条款在合同中明确列出。
C1 adjective /ˌprɛfəˈrɛnʃəl/

preferential

优先的
Meaning
showing or giving advantage to one over others
Example
Members receive preferential treatment at the club.
会员在俱乐部享有优先待遇。
C2 adjective /ˈsætərˌnaɪn/

saturnine

忧郁的
Meaning
slow and gloomy in mood
Example
His saturnine expression made everyone in the room uncomfortable.
他的忧郁表情让房间里的人都感到不舒服。
B2 verb /ɪˈvækjueɪt/

evacuate

撤离
Meaning
To remove people from a dangerous place to safety.
Example
The residents were ordered to evacuate the building after the fire alarm.
火警响后，居民们被命令撤离大楼。
C2 adjective /ˈdjuːtiəbl/

dutiable

需缴关税
Meaning
subject to customs duty or tax
Example
Imported electronics are often dutiable at the border.
进口电子产品在边境通常需缴纳关税。