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C1 adjective /ˈvɑːlətl/

volatile

波动的
Meaning
likely to change rapidly and unpredictably, especially for the worse
Example
The stock market is extremely volatile these days.
股市这些天极其波动。
C2 verb /ˌdɪskəmˈbɑːbjuleɪt/

discombobulate

困惑
Meaning
to confuse or disconcert; to upset the normal order
Example
The sudden question seemed to discombobulate him.
突如其来的问题似乎让他感到困惑。
C1 adverb /ˌɪnsɪˈdɛntəli/

incidentally

顺便
Meaning
by the way; used to introduce a remark not directly related to the main subject
Example
Incidentally, did you know that she studied in Paris?
顺便问一下，你知道她曾经在巴黎学习吗？
B2 adjective /ɪnˈseɪn/

insane

疯狂
Meaning
mentally ill; extremely foolish or unreasonable
Example
The idea of jumping off the cliff seemed insane.
从悬崖上跳下的想法显得疯狂。
C1 noun dɪˈtætʃ.mənt

detachment

超脱
Meaning
The state of being objective or aloof; not being emotionally involved.
Example
Buddhist philosophy encourages detachment from material desires.
佛教哲学鼓励从物质欲望中解脱。
B2 noun, verb /ræmp/

ramp

坡道
Meaning
a sloping surface joining two different levels; as a verb, to increase or rise sharply
Example
The car drove up the ramp into the parking garage.
汽车驶上了停车场的坡道。
C2 noun /ˌθɜː.məʊˈdʒen.ɪ.sɪs/

thermogenesis

热量生产过程
Meaning
The process of heat production in living organisms, often associated with burning calories and energy expenditure.
Example
Spicy foods can enhance thermogenesis and calorie burning.
辛辣食物可以增强热生热和卡路里燃烧。
C1 noun /djuːˈɛt/

duet

二重奏
Meaning
a musical performance by two singers or instrumentalists
Example
They sang a beautiful duet together on stage.
他们在舞台上共同演唱了一首美丽的二重奏。
B2 noun dʒəˈnet.ɪks

genetics

遗传学
Meaning
The study of heredity and the variation of inherited characteristics.
Example
Genetics plays a pivotal role in healthcare advancements.
遗传学在医疗保健进步中起着至关重要的作用。
B2 adjective /dɪsˈɡʌstɪd/

disgusted

厌恶的
Meaning
feeling a strong sense of dislike or revulsion
Example
She was disgusted by the way he treated the animals.
她对他对待动物的方式感到厌恶。
C2 noun /ˈklaɪ.mɪŋ læŋ læŋ/

Climbing lang lang

攀爬植物兰兰
Meaning
a climbing plant with fragrant flowers native to tropical regions
Example
The climbing lang lang vine produces beautiful fragrant flowers.
攀爬植物兰兰藤本会产生美丽的芳香花朵。
C2 adjective /daɪˈdæktɪk/

didactic

教学的
Meaning
Intended to teach, often with a moral lesson.
Example
The novel is not just entertaining but also didactic in nature.
这本小说不仅仅是娱乐性，还有教学性质。
C2 noun /ˈɪŋkjʊbəs/

incubus

恶梦般的负担
Meaning
An oppressive or nightmarish burden; in folklore, an evil spirit that lies upon sleeping people.
Example
Debt became an incubus that weighed heavily on the family.
债务成了一个恶梦般的负担，沉重地压在这个家庭上。
B2 noun /dʒiˈɒl.ə.dʒi/

geology

地质学
Meaning
the science that deals with the Earth's physical structure and substances
Example
She studied geology to understand earthquakes.
她学习地质学以了解地震。
B2 verb /rɪˈzɜːv/

reserve

预定
Meaning
to keep something for future use; to book in advance
Example
I want to reserve a table for dinner.
我想为晚餐预订一张桌子。
B2 adjective /mɑːrkt/

Marked

显著的; 明显的; 独特的
Meaning
clearly noticeable; distinct; obvious
Example
There was a marked improvement in her performance.
她的表现有了显著的改善。
C1 adjective /ˈvæljənt/

Valiant

英勇的; 英雄的
Meaning
showing courage or determination; brave and heroic
Example
The valiant soldier fought bravely to protect his country.
英勇的士兵勇敢地战斗，保护了他的国家。
B2 verb /mɔːrn/

mourn

哀悼
Meaning
To feel or express deep sadness or grief, especially because of someone's death.
Example
They gathered to mourn the loss of their friend.
他们聚集在一起，悼念他们朋友的离世。
B2 noun /ˈliːtər/

litre

升
Meaning
a metric unit of volume equal to 1,000 cubic centimeters; commonly used to measure liquids
Example
She bought a litre of milk from the shop.
她从商店买了一升牛奶。
C1 noun trəˈdʒek.tər.i

trajectory

轨道
Meaning
The path followed by a projectile flying or an object moving under the action of given forces.
Example
The satellite followed its intended trajectory.
卫星沿着预定的轨道飞行。
C2 noun /pɜːrtʃt raɪs/

Perched rice

膨化米
Meaning
puffed rice; rice that has been heated and puffed into light, crispy grains
Example
I enjoy eating puffed rice as a healthy snack.
我喜欢把膨化米当作健康的小吃。
B2 noun /ˈæstərɔɪd/

asteroid

小行星
Meaning
A small rocky body orbiting the sun, mostly found in the asteroid belt between Mars and Jupiter.
Example
The asteroid belt lies between the orbits of Mars and Jupiter.
小行星带位于火星和木星的轨道之间。
C1 noun /ˈpɑːr.keɪ/

parquet

木质地板
Meaning
A floor made of wooden blocks arranged in a geometric pattern.
Example
The old mansion had a beautiful parquet floor.
那座古老的豪宅有一块漂亮的木质地板。
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。
A2 verb/adjective /lɒst/

lost

丢失
Meaning
Unable to find the way; no longer in possession of something.
Example
He lost his keys and couldn’t enter the house.
他丢失了钥匙，无法进入房子。
C1 noun /ˌsæl.jʊˈteɪ.ʃən/

Salutation

问候; 善意的表达
Meaning
a greeting; an expression of goodwill
Example
The letter began with a formal salutation.
这封信以正式的问候开始。
B2 noun ˈæn.ɪk.doʊt

anecdote

在演讲或写作中使用的短小有趣的故事
Meaning
A short interesting story used in speeches or writing.
Example
A well-placed anecdote makes a speech more relatable.
一个合适的位置插入小故事能让演讲更加容易理解。
B1 noun /ˈkɑn.fɪ.dəns/

Confidence

自信
Meaning
the feeling or belief that one can rely on someone or something; firm trust; self-assurance
Example
She spoke with great confidence during the job interview.
她在面试中表现出极大的自信。
C1 noun /ˈdʒuː.bɪ.liː/

Jubilee

周年纪念; 特别庆典
Meaning
a special anniversary celebration, especially the 25th, 50th, or 60th anniversary of an important event
Example
The school celebrated its golden jubilee with a grand ceremony.
学校以盛大的仪式庆祝了它的金色周年纪念。
C1 adjective /ˈwɪst.fəl/

Wistful

渴望的; 忧郁的
Meaning
having a feeling of longing or yearning; melancholy
Example
She gave a wistful smile when remembering her childhood days.
她在回忆起童年时，露出了一丝惆怅的微笑。
A2 conjunction /ʌnˈlɛs/

unless

除非
Meaning
except if
Example
We won't go unless it stops raining.
除非雨停了，否则我们不去。
C2 verb /trænzˈmjuːt/

transmute

转化
Meaning
to change in form, nature, or substance
Example
Alchemy aimed to transmute lead into gold.
炼金术旨在将铅转化为黄金。
B1 noun /ˈsɛkrəteri/

secretary

Meaning
a person employed to handle correspondence and manage routine tasks for an individual or organization
Example
The secretary scheduled the meeting for tomorrow.
C2 adjective /ˈmɔːkɪʃ/

mawkish

过于伤感
Meaning
excessively sentimental, often to the point of being sickly
Example
The movie was criticized for its mawkish sentimentality.
电影因过于伤感的情感而受到批评。
A1 noun /ɪər/

Ear

耳朵; 听力; 听的能力
Meaning
the organ of hearing; the ability to hear or listen
Example
She whispered something in his ear during the meeting.
她在会议期间低声在他耳边说了些什么。
C1 noun /ˈliːweɪ/

leeway

回旋余地
Meaning
Freedom to act within certain limits; extra space or time.
Example
The manager gave the team some leeway to finish the project.
经理给了团队一些回旋余地来完成项目。
C1 noun /ˈbɑːr.tər ˌsɪs.təm/

barter system

物物交换
Meaning
A system of exchange where goods and services are traded directly without using money.
Example
Ancient civilizations used the barter system for trade.
古代文明使用物物交换系统进行贸易。
C2 noun /ɪˈfʌldʒəns/

effulgence

光辉
Meaning
Brilliant radiance or shining brightness.
Example
The effulgence of the sunrise lit up the entire valley.
日出的光辉照亮了整个山谷。
C2 noun /ˈæp.ɪˌkʌl.tʃər/

apiculture

养蜂
Meaning
The practice of keeping and raising bees for honey and other products.
Example
Apiculture plays a vital role in agriculture by supporting pollination.
养蜂在农业中起着至关重要的作用，支持授粉。
B1 adverb /ðʌs/

thus

因此
Meaning
as a result or consequence of something previously stated
Example
He was late, thus he missed the meeting.
他迟到了，因此错过了会议。
B2 noun /wɜːrld ɪnˈvaɪrənmənt deɪ/

World Environment Day

世界环境日
Meaning
An annual global event celebrated on June 5 to raise awareness about environmental protection and encourage action for environmental conservation.
Example
World Environment Day is celebrated every year on June 5.
世界环境日每年6月5日庆祝。
A2 noun /skwɛə(r)/

square

正方形
Meaning
a shape with four equal straight sides and four right angles
Example
The table has a square shape.
桌子是正方形的。
C1 verb /ˈrevəl/

revel

陶醉
Meaning
to enjoy oneself in a lively and noisy way; to take great pleasure in
Example
They revel in their success.
他们沉浸在成功中。
B2 noun /fleʃ/

Flesh

肉
Meaning
the soft substance consisting of muscle and fat that is found between the skin and bones
Example
The doctor examined the wound to check if it had penetrated the flesh.
医生检查了伤口，看看它是否已经穿透了肉体
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 noun /hɜːrˈbɛəriəm/

herbarium

植物标本馆
Meaning
A collection of preserved plant specimens and associated data used for scientific study.
Example
The university maintains a large herbarium for research and education.
大学为研究和教育保持着一个大型植物标本馆。
A2 adjective, noun /ɪˈtæliən/

italian

幸福
Meaning
relating to Italy, its people, or its language; a person from Italy
Example
She loves Italian food.
她收到奖项时无法隐藏自己的快乐。
C1 noun /ɪɡˌzæm.ɪˈniː/

Examinee

考生
Meaning
a person who is being tested in an examination
Example
Each examinee was given two hours to complete the test.
每个考生都有两小时来完成考试。
A2 adjective /θɪn/

Thin

薄的; 狭窄的
Meaning
having little thickness; not thick; slender
Example
She wore a thin jacket in the cold weather.
她在寒冷的天气里穿了一件薄外套。
B1 adjective /ˈwel.θi/

Wealthy

富有的; 有钱的; 繁荣的
Meaning
having a great deal of money; rich; prosperous
Example
The wealthy businessman donated millions to charity.
富有的商人捐赠了数百万美元给慈善事业。
B1 noun /ˌmoʊtɪˈveɪʃən/

motivation

动机
Meaning
the reason or drive for acting or behaving in a particular way
Example
She lost her motivation to continue the project.
她失去了继续项目的动机。
C1 adjective ˈsɛd(ə)ntəri

sedentary

久坐的
Meaning
Characterized by much sitting and little physical activity.
Example
A sedentary lifestyle can lead to numerous health problems.
久坐的生活方式可能导致多种健康问题。
C2 adjective /ˌpɛntəˈveɪlənt/

pentavalent

五价
Meaning
Having a valence of five, especially in chemistry.
Example
Phosphorus can exist in a pentavalent state.
磷可以以五价状态存在。
B2 noun /ˈfaʊn.dər/

Founder

创始人
Meaning
a person who establishes an institution or settlement; someone who starts or creates something
Example
Steve Jobs was the co-founder of Apple Inc. and revolutionized personal computing.
史蒂夫·乔布斯是苹果公司联合创始人，并且革命性地改变了个人计算机。
B1 adverb /ˈbriːf.li/

Briefly

简要地
Meaning
in a short and clear way; for a short time
Example
Please explain the problem briefly.
请简要解释问题。
A2 phrasal verb /lʊk ˈɑːftər/

look after

照顾
Meaning
to take care of someone or something; to be responsible for someone’s well-being
Example
She looks after her younger brother while their parents are at work.
父母上班时，她照顾弟弟。
C1 noun /ˈdɛdlɒk/

deadlock

僵局
Meaning
a situation in which progress is impossible because of disagreement
Example
Negotiations reached a deadlock after neither side agreed to compromise.
谈判在双方都未同意妥协后陷入了僵局。
B2 verb /ɪnˈtaɪtəl/

entitle

授予权利
Meaning
to give someone the right to have or do something
Example
Employees are entitled to receive paid holidays.
员工有权享受带薪假期。
C1 adjective /təˈrɛstriəl/

terrestrial

陆生
Meaning
Relating to the Earth or land as opposed to the sea or air; living or growing on land.
Example
Humans are terrestrial beings who live on land.
人类是生活在陆地上的陆生生物。
C2 noun /ˈhʌstɪŋz/

hustings

竞选活动
Meaning
the political campaigning and speeches before an election
Example
The candidate gained popularity during the hustings.
候选人在竞选活动期间赢得了人气。
C2 noun /ˌɒktədʒəˈnɛəriən/

octogenarian

八十岁老人
Meaning
A person who is between 80 and 89 years old.
Example
The octogenarian still jogs every morning to stay healthy.
这位八十岁老人仍然每天早上跑步以保持健康。
C1 adjective /dɪˈmɛntɪd/

demented

精神错乱的 / 不理智的
Meaning
behaving irrationally due to mental illness or extreme excitement
Example
He looked demented after hearing the shocking news.
他在听到令人震惊的消息后看起来像个精神错乱的人。
B2 noun/verb /dɪˈpɑːzɪt/

deposit

存款, 预付款
Meaning
to place money in a bank account, or a sum paid in advance as security; a layer of material left naturally
Example
She deposited $500 into her savings account.
她向她的储蓄账户存入了500美元。
C2 adjective /ˈdɛsəlˌtɔːri/

desultory

杂乱无章
Meaning
lacking a clear plan, purpose, or enthusiasm
Example
His desultory conversation bored the audience.
他那杂乱无章的谈话让观众感到无聊。
C2 noun /əˈmʊr/

amour

秘密的爱
Meaning
A secret or illicit love affair.
Example
The novel tells the story of a forbidden amour between two characters.
这本小说讲述了两个人物之间的禁忌爱情故事。
B2 verb /ˈvælɪdeɪt/

validate

验证
Meaning
To check or prove the accuracy, truth, or legality of something.
Example
The scientist worked hard to validate the experiment's results.
科学家努力验证实验结果。
B2 noun /əˈnætəmi/

anatomy

解剖学
Meaning
the study of the structure of living things, especially the human body
Example
She is studying human anatomy at medical school.
她在医学院学习人体解剖学。
B1 adverb /ˈtʃɪəfəli/

cheerfully

愉快地
Meaning
in a happy and positive manner; with visible good spirits
Example
She greeted everyone cheerfully despite the long day.
尽管一天很长，她还是愉快地向大家打招呼。
B1 noun /əˈtæʧmənt/

attachment

依附
Meaning
a strong feeling of affection or connection
Example
The attachment he felt to his hometown was undeniable.
他对家乡的依附感是不可否认的。
B2 noun /heɪl/

Hail

冰雹
Meaning
pellets of frozen rain that fall in showers from cumulonimbus clouds; a greeting or acclaim
Example
The sudden hailstorm damaged many cars in the parking lot with large ice pellets.
突如其来的冰雹风暴用大冰粒损坏了停车场里的许多汽车。
C2 adjective /sɛpˈtɛnɪəl/

septennial

每七年一次
Meaning
Occurring every seven years.
Example
The festival is a septennial tradition in the village.
这个节日是村里每七年一次的传统。
B2 noun fəˈnɒm.ɪ.nə

phenomena

现象
Meaning
Facts or situations that are observed to exist or happen, especially ones whose cause or explanation is in question.
Example
Phenomena like floods disrupt agricultural systems.
像洪水这样的现象扰乱了农业系统。
C1 noun /ˈheɪl.stɔːrm/

Hailstorm

冰雹风暴
Meaning
a violent storm with hail falling from the sky
Example
The hailstorm damaged many cars in the parking lot.
冰雹风暴损坏了停车场中的许多汽车。
C2 noun /ˈbɔːlsəm/

Balsam

香脂花
Meaning
a flowering plant with colorful blooms that often open in the evening; also refers to aromatic resin
Example
The garden balsam flowers bloomed beautifully in various shades of pink and purple.
花园中的香脂花以粉红色和紫色的不同色调美丽地盛开。
C1 noun /ˈroʊz ˈwɔː.tər/

Rose-water

玫瑰水
Meaning
a flavored water made by steeping rose petals in water, used in cooking and cosmetics
Example
She added a few drops of rose-water to the dessert.
她在甜点中加入了几滴玫瑰水。
C2 noun, adjective, verb /ˈrɛprəˌbeɪt/

reprobate

Meaning
A person of immoral character; to express disapproval of; morally corrupt.
Example
The old reprobate spent his days gambling and drinking.
B2 noun /ˈɪmɪɡrənt/

immigrant

移民
Meaning
a person who comes to live permanently in a foreign country
Example
The city has welcomed many new immigrants this year.
今年这座城市接纳了许多新的移民。
C1 noun kənˈsɔː.ti.əm

consortium

联合体
Meaning
An association of several companies or organizations formed to undertake an enterprise beyond the resources of any one member.
Example
The consortium worked collaboratively to build the cable.
该联盟协同合作建设了电缆。
B2 verb lɔːntʃt

launched

发射
Meaning
Set (something) in motion by pushing it or letting it go.
Example
The satellite was launched successfully.
卫星已成功发射。
A2 noun /ˈkɒm.ent/

comment

评论
Meaning
a verbal or written remark expressing an opinion or reaction
Example
She posted a kind comment on my photo.
她在我的照片下留言了一条友好的评论。
C1 noun /kriːd/

creed

信条, 原则
Meaning
A system of religious or spiritual beliefs or a guiding principle.
Example
Freedom of speech is part of his personal creed.
言论自由是他个人信条的一部分。
C1 noun /ˈbeɪsbɔːrd/

baseboard

踢脚线
Meaning
A narrow board running along the bottom of an interior wall, covering the joint between wall and floor.
Example
The carpenter painted the baseboard white.
木匠把踢脚线涂成了白色。
B2 adjective ˌkɒm.prɪˈhen.sɪv

comprehensive

全面的
Meaning
Including or dealing with all or nearly all elements or aspects of something; complete and thorough.
Example
A comprehensive study enhances understanding.
全面的研究促进了理解。
B1 noun dɪˈmɒk.rə.si

democracy

民主
Meaning
A system of government by the whole population or all the eligible members of a state, typically through elected representatives.
Example
Democracy ensures equal rights for all citizens.
民主确保所有公民享有平等的权利。
B1 adjective /ˈæn.ju.əl/

annual

年度
Meaning
happening once every year
Example
The company holds an annual meeting for all its shareholders.
公司每年为所有股东举办年度会议。
B1 adjective /ʌnˈplɛz.ənt/

Unpleasant

令人不悦的
Meaning
not giving or causing pleasure; disagreeable
Example
The medicine had an unpleasant taste.
药物有一种令人不悦的味道。
B2 noun ˈbreɪk.θruː

breakthrough

突破
Meaning
A sudden, dramatic, and important discovery or development.
Example
The breakthrough opens doors for new technology.
这个突破为新技术打开了大门。
C1 adjective /ˈfeɪt.fəl/

fateful

决定性或灾难性的
Meaning
having significant or disastrous consequences
Example
Their fateful decision changed the course of history.
他们的决定性决定改变了历史的进程。
C1 noun ˌmɛtə ˈmɔːfəsɪs

metamorphosis

蜕变
Meaning
A change of the form or nature of a thing or person into a completely different one, by natural or supernatural means.
Example
The company's metamorphosis from a small startup to a global leader was remarkable.
这家公司的蜕变从一家小型初创公司成长为全球领导者，令人瞩目。
C2 adjective /ˈɪnfəntaɪl/

infantile

婴儿式
Meaning
characteristic of an infant; childish
Example
His infantile behavior embarrassed everyone at the meeting.
他那种婴儿式的行为让会议上的每个人都感到尴尬。
B2 noun /kəˈlɪʒ.ən/

Collision

碰撞; 冲突
Meaning
an instance of one moving object hitting violently against another; a conflict of opposing ideas or interests
Example
The collision between two cars caused a major traffic jam.
两辆车之间的碰撞造成了严重的交通堵塞。
A2 adjective /ˌwel ˈdʌn/

Well-done

做得好; 完全煮熟
Meaning
performed skillfully and successfully; cooked thoroughly
Example
The project was well-done and impressed everyone.
项目做得好，令所有人印象深刻。
C1 verb, noun /lɜːrtʃ/

lurch

Meaning
to make an abrupt, unsteady, or uncontrolled movement; a sudden movement or stagger
Example
The bus lurched forward as the driver hit the brakes.
C2 noun /ˈwɒrən/

warren

兔子洞的网络
Meaning
A network of interconnected rabbit burrows; also used metaphorically for a densely populated building or district.
Example
The old part of the city is a warren of narrow streets.
这座城市的老部分是一个狭窄街道的网络。
C1 adjective /ˌmɒnəˈlɪθɪk/

monolithic

单片的
Meaning
Massive, uniform, and indivisible; resembling a large single stone or structure.
Example
The company maintained a monolithic structure resistant to change.
公司保持了一个抗变的单片结构。
C1 verb /priːˈɛmpt/

preempt

预防
Meaning
To take action in order to prevent something from happening; to take the place of something.
Example
The government acted quickly to preempt a financial crisis.
政府迅速采取行动，预防金融危机。
C1 adjective /ˌʌndərˈsteɪtɪd/

understated

低调的
Meaning
Presented in a subtle and restrained way.
Example
She wore an elegant but understated dress.
她穿了一件优雅但低调的裙子。
C1 adjective /ˈsnɒbɪʃ/

snobbish

自命不凡
Meaning
having or showing the attitude of people who think they are better than others
Example
She seemed snobbish because she avoided talking to the waiters.
她看起来很自命不凡，因为她避免与服务员交谈。
C2 noun /ɪnˈsuːsiəns/

insouciance

无忧无虑
Meaning
Casual lack of concern; indifference.
Example
She carried herself with an air of insouciance, unbothered by the challenges ahead.
她带着一副无忧无虑的样子走着，毫不担心前方的挑战。
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。
C1 adjective /ɪnˈfleɪtɪd/

inflated

膨胀
Meaning
excessively increased in size, value, or importance; filled with air or gas
Example
The company faced criticism for its inflated prices.
公司因其膨胀的价格而遭受批评。
B2 verb /ˈdɛvəˌsteɪt/

devastate

摧毁
Meaning
to cause severe and overwhelming destruction or damage
Example
The hurricane devastated the coastal town.
飓风摧毁了海岸城镇。
C1 verb; noun /beltʃ/

belch

打嗝
Meaning
to expel air noisily from the stomach through the mouth; to emit or pour out suddenly and forcefully
Example
After drinking the soda, he belched loudly.
喝了汽水后，他大声打嗝。
A2 noun /ˈmɪr.ər/

Mirror

镜子
Meaning
a reflective surface that shows an image of whatever is in front of it
Example
She looked at herself in the mirror.
她看着镜子里的自己。
C1 noun /ɪkˈspoʊnənt/

exponent

指数
Meaning
a person who supports, promotes, or explains an idea; in math, a symbol denoting power
Example
She is a leading exponent of modern dance.
她是现代舞蹈的领先指数。
B2 noun /ˈsɛm.ɪ.nɑːr/

seminar

研讨会
Meaning
A meeting for discussion or training, especially in an academic setting.
Example
The professor invited all students to attend the seminar on climate change.
教授邀请所有学生参加关于气候变化的研讨会。
B1 noun /ˈvaɪrəs/

virus

病毒
Meaning
A tiny infectious agent that can replicate only inside the living cells of an organism.
Example
The computer was infected with a dangerous virus.
计算机感染了一个危险的病毒。
B1 adverb /ˈfʊli/

fully

完全
Meaning
completely or entirely; to the fullest extent
Example
She is fully aware of the risks.
她完全意识到这些风险。
A2 noun /koʊtʃ/

coach

教练
Meaning
A person who helps improve others' skills or knowledge.
Example
The football coach motivated his team before the match.
足球教练在比赛前激励了他的队伍。
C1 adjective skiˈmæt.ɪk

Schematic

与图表相关或简短的
Meaning
Presenting some framework or concept briefly
Example
The engineer provided a schematic diagram of the project.
工程师提供了该项目的示意图。
C2 noun /ˈjuːnɪvəˌlɛns/

univalence

单价性
Meaning
The state of having a single valence or combining power, especially in chemistry.
Example
Hydrogen is characterized by its univalence in chemical reactions.
氢气在化学反应中以其单价性为特点。
C1 noun /ˈæb.stɪ.nəns/

abstinence

禁欲，节制
Meaning
the practice of restraining oneself from indulging in something, typically alcohol or sex
Example
His doctor advised abstinence from alcohol for better health.
他的医生建议他戒酒以改善健康。
C1 adjective /ˈɛntərˌpraɪzɪŋ/

enterprising

有企业家精神的
Meaning
showing initiative and resourcefulness; willing to take risks to achieve success
Example
She is an enterprising young entrepreneur.
她是一个有企业家精神的年轻企业家。
C1 adjective /ˈpɑːndərəs/

ponderous

沉重而缓慢
Meaning
slow and clumsy because of great weight; dull and labored
Example
The ponderous lecture made it hard for students to stay awake.
这堂沉重而缓慢的讲座使学生们难以保持清醒。
B2 noun /ˈkloʊʒər/

closure

关闭
Meaning
the action or process of closing something, or the sense of finality or resolution.
Example
The closure of the company left many employees without jobs.
公司的关闭使许多员工失业。
C2 verb /vɔːnt/

vaunt

Meaning
to boast or brag about something, especially in an excessive way
Example
He would often vaunt his achievements in front of his colleagues.
C1 noun /ˈmɛdli/

medley

混合
Meaning
A mixture of different things, especially musical tunes combined together.
Example
The band played a medley of popular songs.
乐队演奏了流行歌曲的混合曲目。
C2 adjective /ɪˈmɛrɪtəs/

emeritus

荣休教授
Meaning
having retired but allowed to retain their title as an honor
Example
He is a professor emeritus at the university.
他是大学的荣休教授。
C2 noun /briːtʃ/

breech

Meaning
The back part of a gun barrel; a position of a baby in the womb where the buttocks or feet come out first at birth.
Example
The rifle was loaded through the breech.
B1 noun /ˈneɪvi/

Navy

海军
Meaning
the branch of armed forces that conducts military operations at sea
Example
He joined the navy after graduating from college.
他在大学毕业后加入了海军。
C1 noun /ˈæl.kə.laɪ/

alkali

碱性物质
Meaning
a soluble base substance, typically with a pH greater than 7, that neutralizes acids
Example
Soap contains alkali which helps remove grease.
肥皂含有碱，能帮助去除油脂。