fatherless
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C1 adjective /ˈfɑːð.ər.ləs/

fatherless

没有父亲
Meaning
without a father
Example
The fatherless child relied on the support of his community.
这个没有父亲的孩子依赖于他社区的支持。
C1 noun /əˈkɔːrdiən/

accordion

手风琴 (乐器)
Meaning
a musical instrument played by squeezing and expanding with keys and buttons
Example
The musician played a cheerful tune on the accordion.
音乐家在手风琴上演奏了一首愉快的旋律。
C1 verb /ɪmˈpiːtʃ/

impeach

Meaning
To charge a public official with misconduct while in office.
Example
The parliament voted to impeach the president.
B2 verb /ˈbjuːtɪfaɪ/

beautify

美化
Meaning
to make something more beautiful or attractive
Example
The city plans to beautify the old park with trees and lights.
这座城市计划用树木和灯光美化旧公园。
B2 verb /ˈsmʌɡəl/

smuggle

Meaning
to move goods illegally into or out of a country
Example
The gang tried to smuggle gold across the border.
A2 verb /siːm/

seem

看起来
Meaning
to give the impression of being something or having a particular quality
Example
He seems tired after the long journey.
他看起来在长时间的旅程后很累。
C1 verb /dɔːnt/

daunt

威吓
Meaning
to make someone feel intimidated, discouraged, or less confident
Example
The steep climb did not daunt the experienced hikers.
陡峭的攀登没有让经验丰富的登山者气馁。
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 /ˌsɪləbɪˈkeɪʃən/

syllabication

音节划分
Meaning
The division of words into syllables.
Example
Proper syllabication helps in correct pronunciation.
正确的音节划分有助于正确发音。
C1 noun /ˈʃoʊ.vəˌnɪz.əm/

chauvinism

Meaning
Excessive or prejudiced support for one's own cause, group, or gender, often with contempt for others.
Example
The company's culture was criticized for promoting male chauvinism.
B2 adjective səˈsteɪ.nə.bəl

sustainable

可持续的
Meaning
Able to be maintained at a certain rate or level; conserving an ecological balance.
Example
Sustainable practices mitigate environmental impact.
可持续的实践减少了对环境的影响。
B2 adjective /traɪˈʌmfənt/

Triumphant

得胜的; 高兴的
Meaning
having won a battle or contest; rejoicing as a result of success
Example
The team was triumphant after winning the championship.
团队在赢得锦标赛后感到欢欣鼓舞。
C1 noun səˈsteɪ.nə.bəl tekˈnɒl.ə.dʒi

sustainable technology

可持续技术
Meaning
Technology designed to meet present needs without compromising future generations' ability to meet their needs.
Example
Sustainable technology ensures a cleaner future.
可持续技术确保更清洁的未来。
B2 adverb /ˈkæʒ.u.ə.li/

Casually

随便地; 放松且非正式的方式
Meaning
in a relaxed and informal way; without much thought or preparation
Example
He casually mentioned that he was leaving.
他随便提到他要走了。
C1 adjective /ˈɒptɪkəl/

optical

光学的
Meaning
related to or used in seeing or sight
Example
The optical illusion fooled everyone at the exhibition.
光学幻觉在展览会上迷惑了所有人。
B1 noun /wɜːrm/

Worm

虫子
Meaning
a long, soft-bodied invertebrate animal that lives in soil
Example
The bird caught a worm from the garden soil.
鸟从花园的土壤中抓住了一条虫子。
C1 noun, verb /ˈtætər/

tatter

Meaning
A torn piece of cloth or clothing; to become ragged or torn.
Example
The old flag hung in tatters after the storm.
C2 noun /ˈrɛtɪnjuː/

retinue

随行人员
Meaning
A group of attendants or followers accompanying an important person.
Example
The king entered the hall followed by his retinue.
国王带着随行人员进入了大厅。
C2 noun /ˌkæv.əlˈkeɪd/

cavalcade

盛大队列
Meaning
a formal procession of people riding on horses or in vehicles
Example
The king’s arrival was marked by a grand cavalcade.
国王的到来标志着一场盛大的队列。
C2 noun /ˈtɔːrpər/

torpor

昏睡
Meaning
A state of physical or mental inactivity; lethargy.
Example
The heat induced a state of torpor in the workers.
高温使工人们陷入了昏睡状态。
C2 adjective /ˈflæs.ɪd/

Flaccid

软弱的; 无力的; 松弛的;
Meaning
soft and limp; lacking firmness; drooping
Example
The plant's leaves became flaccid after days without water.
在没有水的几天后，植物的叶子变得软弱无力。
C1 noun /ˈsɑːɡə/

saga

长篇故事
Meaning
A long story of heroic achievement, or a long, complex series of events.
Example
The company's rise and fall became a corporate saga.
公司的兴衰成为了一部企业传奇。
B1 adjective, preposition, noun /mɪd/

mid

中间
Meaning
being in the middle of something; the central part or point
Example
She joined the project in mid June.
她在六月中旬加入了这个项目。
B1 adjective /ˈskɪlfʊl/

Skilful

熟练的; 能手; 专家
Meaning
having or showing skill; expert and accomplished
Example
The skilful surgeon performed the operation with great precision.
熟练的外科医生以极高的精确度完成了手术。
C2 verb /dɪˈsɛvər/

dissever

分开
Meaning
To separate or cut apart.
Example
The treaty sought to dissever the two hostile regions.
条约试图分裂这两个敌对的地区。
C2 noun /ˈæntɪkwɛri/

antiquary

古董商
Meaning
A person who studies, collects, or deals in antiques or ancient objects.
Example
The antiquary spent years collecting rare manuscripts from the medieval period.
这位古物商花了多年时间收集来自中世纪的稀有手稿。
B2 adjective /ʌnˈlɔːfl/

Unlawful

非法; 不合法
Meaning
not authorized by law; illegal
Example
The court declared the search unlawful.
法院宣布搜索是非法的。
C1 noun /ˈæptɪˌtjuːd/

aptitude

能力
Meaning
a natural ability or talent to do something well
Example
She has a strong aptitude for learning new languages.
她在学习新语言方面有很强的能力。
C2 adjective /ˈæsɪnaɪn/

asinine

愚蠢的
Meaning
Extremely foolish or stupid.
Example
It was an asinine idea to drive into the storm without checking the weather.
在没有检查天气的情况下开车进入暴风雨是一个愚蠢的主意。
C1 adjective /ˈpɪt.i.ə.bəl/

pitiable

可怜的
Meaning
deserving sympathy or compassion
Example
The stray dog looked pitiable in the rain.
那只流浪狗在雨中看起来十分可怜。
C1 noun /ˈdaɪnəˌmoʊ/

dynamo

发电机; 一个充满能量和热情的人
Meaning
A machine that generates electricity; a person with great energy and enthusiasm.
Example
She is the real dynamo behind the success of the company.
她是公司成功背后的真正动力源。
C1 verb /dɪsˈsætɪsfaɪ/

dissatisfy

使不满
Meaning
to fail to please or meet expectations; to make someone unhappy
Example
The poor service dissatisfies many customers.
糟糕的服务让许多顾客不满意。
B1 noun dɪˈskʌvəriz

discoveries

发现
Meaning
The action or process of finding or learning something for the first time; facts or things discovered.
Example
His discoveries revolutionized multiple fields.
他的发现革新了多个领域。
B2 noun/adjective /ˈlætɪn/

latin

拉丁语
Meaning
the language of ancient Rome; relating to Latin culture or language
Example
Many English words are derived from Latin.
许多英语单词源自拉丁语。
A2 noun pəˈzɪʃ.ən

position

位置
Meaning
A particular way in which someone or something is placed or arranged.
Example
The team's position reflects consistent performance.
团队的位置反映了持续的表现。
B1 adjective dəˈmes.tɪk

domestic

国内的
Meaning
Existing or occurring inside a particular country; not foreign or international.
Example
Domestic investments stabilize the economy.
国内投资稳定经济。
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。
A2 noun ˈpʌblɪk træns ˈpɔːt

public transport

公共交通
Meaning
Transportation systems available for use by the general public, typically including buses, trains, and metros.
Example
Public transport systems are essential for reducing traffic congestion.
公共交通系统对于减少交通拥堵至关重要。
C2 noun /ˈhʌmbʌɡ/

humbug

骗局, 胡说
Meaning
Deceptive or false talk or behavior; nonsense.
Example
He dismissed the idea as humbug.
他将这个想法视为胡说八道。
B2 verb/noun /buː/

boo

Meaning
To show disapproval by shouting 'boo'; or a sound made to surprise or scare.
Example
The audience began to boo the bad performance.
B2 adjective /ˈtaɪə.səm/

Tiresome

令人疲倦的; 无聊的
Meaning
causing weariness or boredom; tedious
Example
The long lecture was tiresome and repetitive.
长时间的演讲令人疲倦且重复。
C2 noun /ˌrækənˈtɜːr/

Raconteur

幸福
Meaning
a person who tells anecdotes in a skillful and amusing way
Example
The old man was a gifted raconteur who entertained everyone with his stories.
当她获得奖项时，她无法掩饰自己的幸福。
B2 noun /ɡʌm/

Gum

牙龈; 粘稠物质
Meaning
the firm flesh that surrounds the roots of the teeth; a viscous secretion
Example
The dentist checked her gum for any signs of disease.
牙医检查了她的牙龈，寻找是否有疾病迹象。
C1 adjective /ˌmaɪ.krəˈskɑː.pɪk/

microscopic

显微镜下可见的
Meaning
Extremely small and only visible with a microscope.
Example
The sample contained microscopic particles.
样本中包含显微镜下可见的颗粒。
C1 noun /ɪˈrɛlɪvənsi/

irrelevancy

无关性
Meaning
the state of being unrelated or unimportant to the matter at hand
Example
The judge dismissed the argument because of its irrelevancy to the case.
法官因该论点与案件无关而将其驳回。
B2 adjective /ˈrɒt.ən/

Rotten

腐烂的; 坏的
Meaning
decayed; spoiled; bad
Example
The apple is rotten and should be thrown away.
苹果已经腐烂了，应该扔掉。
B2 noun /həˈræsmənt/

harassment

骚扰
Meaning
aggressive pressure or intimidation; unwanted and repeated behavior causing discomfort
Example
The company has a strict policy against workplace harassment.
公司对职场骚扰有严格的政策。
B2 verb /ɪɡˈzɜrt/

exert

施加
Meaning
to apply or bring to bear; to use physical or mental effort
Example
He exerted all his strength to lift the heavy box.
他全力以赴抬起沉重的箱子。
C1 verb /vəˈkeɪt/

vacate

腾出
Meaning
to leave a place; to make empty by leaving
Example
The tenants must vacate the apartment by the end of the month.
房客必须在月底前腾出公寓。
C2 verb /ˈsʌplɪˌkeɪt/

supplicate

恳求
Meaning
To ask for something earnestly or humbly, often in a religious context.
Example
The villagers supplicated the gods for rain during the drought.
村民们在干旱期间恳求神灵降雨。
C2 noun /ˈsɪnjuː/

sinew

肌腱
Meaning
A tendon; figuratively, the source of strength, power, or resilience.
Example
The sinews in his arms stood out as he lifted the heavy box.
当他举起沉重的箱子时，他手臂上的肌腱明显凸出。
C1 adjective /pəˈrɪʒən/

parisian

与巴黎相关
Meaning
relating to Paris or its people
Example
She wore a Parisian style dress at the party.
她在派对上穿着巴黎风格的裙子。
C2 noun /kənˈtɔːrʃənz/

contortions

扭曲的复数形式; 多个弯曲或扭曲的形状
Meaning
plural form of contortion; multiple twisted or bent shapes
Example
The magician's contortions left the crowd in awe.
魔术师的扭曲让观众惊叹不已。
C2 noun /ænˈtɪlədʒi/

antilogy

矛盾论
Meaning
A contradiction in terms or ideas; inconsistency in speech or writing.
Example
The politician's statement was criticized for its antilogy.
这位政治家的声明因其矛盾论而受到批评。
C2 verb /ˈɛnərˌveɪt/

enervate

使虚弱
Meaning
To weaken or drain someone of strength or vitality.
Example
The long hours of work enervated him.
长期的工作使他感到虚弱。
B1 noun /pɜːrs/

purse

钱包
Meaning
a small bag used by women to carry money and personal items
Example
She kept her wallet in her purse.
她把钱包放进了她的手袋里。
C2 noun /ˈmæləprɒˌpɪzəm/

malapropism

误用词汇
Meaning
the mistaken use of a word in place of a similar-sounding one, often with amusing effect
Example
He is famous for his malapropism when speaking in public.
他因在公众演讲时的误用词汇而闻名。
B2 noun /bɪtʃ/

Bitch

母狗;
Meaning
a female dog; an unpleasant or spiteful woman (offensive)
Example
The bitch gave birth to five puppies.
那只母狗生下了五只小狗。
B1 noun /praɪˈɔːr.ə.ti/

Priority

优先级
Meaning
something that is more important than other things and needs attention first
Example
Health should be our top priority.
健康应该是我们最优先考虑的事项。
A2 adjective /smuːð/

Smooth

平滑的; 无困难的; 流畅的
Meaning
having an even surface; without difficulties; flowing easily
Example
The road was smooth and comfortable to drive on.
这条路很平滑，开车很舒服。
B2 adverb /ɪmˈpeɪʃəntli/

impatiently

不耐烦地
Meaning
in a manner showing annoyance or restlessness due to delay or waiting
Example
She tapped her fingers impatiently while waiting for the reply.
她在等回复时不耐烦地敲着手指。
C1 verb /θrɒb/

throb

跳动
Meaning
to beat or pulse strongly, often with pain
Example
His head began to throb after the long day.
他的一天结束后，头开始跳动。
C1 verb /riːˈfɜːrbɪʃ/

refurbish

翻新
Meaning
To renovate or redecorate something, especially a building.
Example
The company decided to refurbish its old office.
公司决定重新装修它的旧办公室。
C2 noun /ˈtɪŋktʃər/

tincture

轻微的痕迹，一种通过将药物溶解在酒精中制成的药物
Meaning
a slight trace of something; a medicine made by dissolving a drug in alcohol
Example
There was a tincture of sadness in her smile.
她的微笑中有一丝悲伤。
C1 verb /əˈskraɪb/

ascribe

归因于，归咎于
Meaning
To attribute something to a cause, source, or person.
Example
Many scholars ascribe the poem to an unknown author.
许多学者将这首诗归功于一位无名作者。
C1 verb /ˈsɪvɪlaɪz/

civilize

使文明
Meaning
to bring a society or group to a more developed, organized, or socially acceptable state; to educate and refine behavior
Example
Education can help civilize communities by promoting shared values and respect.
教育可以通过促进共同价值观和尊重来使社区更加文明。
C1 adjective /ˌɑːpərˈtuːn/

opportune

合适的时刻
Meaning
Happening at a suitable or convenient time.
Example
She arrived at an opportune moment to help.
她在合适的时刻到达，准备帮助。
B1 verb /ˌɪntərˈækt/

interact

互动
Meaning
to communicate or work together with someone or something
Example
Students interact with teachers during class discussions.
学生们在课堂讨论中与老师互动。
A2 noun /ˈbɪs.kɪt/

Biscuit

饼干
Meaning
a small, hard, dry cake; a cookie
Example
Children love to eat chocolate biscuits with milk.
孩子们喜欢吃巧克力饼干配牛奶。
C1 noun /ˌrɛtrɪˈbjuːʃən/

retribution

报应，惩罚
Meaning
punishment inflicted as vengeance for a wrong or crime
Example
The villagers demanded retribution for the crime committed.
村民要求对犯下的罪行进行报应。
B2 noun /ˌtɜːrmɪˈneɪʃən/

termination

终止
Meaning
the act of ending something or the state of being ended
Example
The termination of the contract caused financial loss.
合同的终止导致了财务损失。
C1 adjective /ˌɛpɪˈsɒdɪk/

episodic

集集式的
Meaning
Happening occasionally or in separate parts; related to episodes.
Example
Her interest in art was episodic, coming and going over the years.
她对艺术的兴趣是间歇性的，随着岁月的流逝而来又去。
B2 noun /ˈaʊt.kʌm/

Outcome

结果; 后果;
Meaning
the result or consequence of an action or situation; the final product
Example
The outcome of the election surprised everyone.
选举的结果让所有人感到惊讶。
C1 noun /rəˈpɪdəti/

rapidity

迅速
Meaning
The quality of moving or happening quickly; swiftness or speed.
Example
The rapidity of technological change is astonishing.
技术变化的速度令人震惊。
B2 verb kəˈlaɪd

collide

碰撞, 撞击
Meaning
Hit with force when moving; come into conflict or opposition.
Example
The two cars collided at the intersection.
两辆车在交叉口相撞。
B2 verb ɪˈrɛktɪŋ

erecting

建造
Meaning
To build; construct; set up in a vertical position.
Example
The workers were erecting a new building downtown.
工人们正在市中心建设一座新建筑。
B2 noun /ɪkˈspəʊʒər/

exposure

暴露
Meaning
the state of being exposed to contact with something, especially harmful
Example
Prolonged exposure to the sun can damage your skin.
长时间暴露在阳光下会损害皮肤。
C1 noun /ˌsɛnsəˈbɪləti/

Sensibility

感性
Meaning
the ability to appreciate and respond to complex emotional or aesthetic influences; sensitivity
Example
Her artistic sensibility made her appreciate fine details in paintings.
她的艺术感性使她能够欣赏画作中的细节。
A2 adjective /ˈlʌki/

lucky

幸运的
Meaning
having good fortune or favorable circumstances
Example
She felt lucky to have such supportive friends.
她觉得自己很幸运，拥有如此支持她的朋友。
C2 adjective /ˈpruːdɪʃ/

prudish

过于拘谨的
Meaning
having or revealing a tendency to be easily shocked by matters relating to sex or nudity
Example
She was too prudish to watch the movie with her friends.
她太拘谨了，不愿和朋友一起看电影。
B1 noun /ˈʃoʊldər/

Shoulder

肩膀
Meaning
the part of the body between the neck and the arm
Example
He carried the bag over his shoulder.
他把包拿在肩膀上。
A2 noun /vɔɪs/

voice

声音
Meaning
the sound produced by the vocal cords; the ability to speak or express oneself
Example
She has a beautiful voice that captivates the audience.
她有一个迷人的声音，吸引了观众。
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。
C1 adjective /ɪˈrɛfjʊtəbəl/

Irrefutable

不可反驳的
Meaning
impossible to deny or disprove; undeniable
Example
The evidence against him was irrefutable.
对他的证据是不可反驳的。
C2 noun /sʌbˈɔːl.tən/

subaltern

处于下级职位的人；在军队中，初级军官
Meaning
A person holding a subordinate position; in the military, a junior officer.
Example
The subaltern was responsible for leading a small platoon of soldiers.
下级军官负责指挥一个小型士兵排。
A2 noun /ˈbʊkʃɒp/

bookshop

书店
Meaning
a retail store where books are sold
Example
She spent an hour browsing in the small bookshop.
她在那家小书店里逛了一个小时。
B1 noun /ˈrɛntəl/

rental

租赁
Meaning
an arrangement in which something is rented, or the amount paid for renting
Example
The car rental was more expensive than we expected.
汽车租赁比我们预期的要贵。
B2 verb əbˈzɜːrvd

observed

庆祝
Meaning
To celebrate or keep a religious or other festival.
Example
The day is observed annually to raise awareness.
这一天每年庆祝，以提高意识。
B2 noun /pænˈdɛmɪk/

pandemic

大流行病
Meaning
An outbreak of a disease that occurs on a global scale.
Example
The COVID-19 pandemic changed the world dramatically.
COVID-19 大流行病极大地改变了世界。
B1 adverb /ˈmiːn.waɪl/

Meanwhile

与此同时
Meaning
at the same time; during the same period
Example
She was cooking dinner, meanwhile he was setting the table.
她在做晚餐，与此同时，他在摆桌子。
C2 adjective /ˈbɛlɪˌkoʊs/

bellicose

好战的
Meaning
Showing a tendency to argue or fight; aggressive.
Example
His bellicose attitude often got him into unnecessary conflicts.
他好战的态度常常让他卷入不必要的冲突。
C1 noun/adjective/verb /bʌf/

buff

影迷 / 打磨
Meaning
A fan or enthusiast; also to polish or shine something.
Example
He is a movie buff who watches films every weekend.
他是一个电影迷，每个周末都看电影。
B2 noun /ˈhɑːt.biːt/

heartbeat

心跳
Meaning
A pulsation of the heart, especially as perceptible to the touch or audible with a stethoscope.
Example
Rubbing the eyes helps normalize the heartbeat.
揉眼睛有助于使心跳恢复正常。
C1 noun /ˌdɪsəˈbiːdiəns/

disobedience

不服从
Meaning
failure or refusal to obey rules, laws, or authority
Example
The child's disobedience worried his parents.
孩子的不服从让父母感到担忧。
C1 adjective /ˈɒm.ɪ.nəs/

Ominous

不祥的; 威胁的
Meaning
giving the impression that something bad will happen; threatening; foreboding
Example
The dark clouds looked ominous before the storm.
暴风雨前，黑云看起来预示着灾难。
C2 noun /ˈdɛvɪltrɪ/

deviltry

恶魔的诡计
Meaning
Cruel or malicious behavior; mischief with an evil aspect.
Example
The villain’s deviltry terrified the townsfolk.
恶棍的恶作剧吓坏了镇上的人。
C1 adjective ˌprɒb.ə.bɪˈlɪs.tɪk

probabilistic

基于概率
Meaning
Based on probability; involving chance or statistical likelihood.
Example
The model follows a probabilistic approach to predictions.
该模型采用概率方法进行预测。
C2 adjective /ˈmɜːrkəntaɪl/

mercantile

商业的
Meaning
related to trade or commerce
Example
The city grew rapidly due to its mercantile activities.
由于其商业活动，这座城市迅速发展。
C1 adjective /ˈkjuːmjələtɪv/

cumulative

累积的
Meaning
Increasing gradually by addition; growing in quantity, force, or effect.
Example
The cumulative effect of stress can harm your health.
压力的累积效应可能对您的健康造成伤害。
B2 verb /kəˈrɛspɒnd/

correspond

通信
Meaning
to communicate by exchanging letters or messages
Example
I correspond regularly with my old friends.
我与我的老朋友定期通信。
B2 verb ˈtrɪɡərz

triggers

引发
Meaning
To cause or initiate something to happen
Example
Air pollution triggers chronic diseases.
空气污染引发了慢性疾病。
C1 noun /lɒft/

loft

阁楼
Meaning
An upper room or space, often under the roof of a building.
Example
She converted the old loft into a modern studio.
她把旧阁楼改造成了一个现代化的工作室。
A2 noun /staɪl/

Style

风格
Meaning
a particular way of doing something; a distinctive appearance or manner of expression
Example
She has her own unique style of writing that captivates readers.
她有自己独特的写作风格，吸引了读者。
C1 adjective /ˈhiːdləs/

heedless

疏忽
Meaning
showing a reckless lack of care or attention
Example
He drove with heedless disregard for the rules.
他开车时对规则表现出疏忽。
B1 noun /ˈev.ɪ.dəns/

Evidence

证据
Meaning
the available body of facts or information indicating whether a belief or proposition is true
Example
The detective found crucial evidence that solved the mysterious case.
侦探找到了至关重要的证据，解开了神秘案件。
C2 adjective /ˈmiː.di.əl/

medial

内侧
Meaning
Situated in or pertaining to the middle; located toward the midline of the body or structure.
Example
The medial side of the knee is more prone to injury.
膝盖的内侧更容易受伤。
A1 adjective /ˈbjuː.tɪ.fəl/

Beautiful

美丽的; 吸引人的; 迷人的;
Meaning
pleasing to the senses; attractive; having qualities that give great pleasure
Example
She has a beautiful voice that captivates everyone.
她有一副美丽的嗓音，吸引着每个人。
B1 verb /əˈpruːv/

approve

批准
Meaning
to officially agree to or accept something; to give permission
Example
The committee will approve the new policy tomorrow.
委员会明天将批准新政策。
C2 noun /ˌɪndɛnˈteɪʃən/

indentation

缩进
Meaning
A space left at the beginning of a line of text; a notch or deep recess on a surface.
Example
The teacher asked the students to use proper indentation in their essays.
老师要求学生在他们的论文中使用正确的缩进。
C2 noun /ˈsɑːrdʒənt ət ɑːrmz/

sergeant-at-arms

警卫员
Meaning
An officer responsible for maintaining order during meetings or legislative sessions.
Example
The sergeant-at-arms escorted the disruptive member out of the hall.
警卫员把扰乱秩序的成员从大厅带了出去。
C1 adjective /ˈɡɑːrdɪd/

guarded

谨慎
Meaning
Cautious and careful in speech or action, often to avoid giving too much away.
Example
He gave a guarded reply to the journalist.
他给记者一个谨慎的回答。
A2 noun,verb /pleɪn/

plane

平面; 飞机; 平滑
Meaning
a flat surface; an aircraft; to make smooth
Example
The carpenter used a tool to plane the wood.
木匠用工具来平整木材。
B2 noun /ˈkrɪstəl/

crystal

水晶
Meaning
a clear, transparent mineral or glass that forms a solid structure with regular patterns
Example
She wore a necklace made of sparkling crystal.
她戴着一条闪闪发光的水晶项链。
C2 noun /ˌsaɪ.kəʊˈɡræf.ɪks/

Psychographics

根据人们的态度、愿望和其他心理标准对人进行研究和分类
Meaning
The study and classification of people according to their attitudes, aspirations, and other psychological criteria.
Example
Psychographics reveal consumer buying motives.
心理图谱揭示了消费者购买动机。
A2 adjective /ʃaɪ/

Shy

害羞的; 腼腆的
Meaning
nervous or timid in the company of other people
Example
The shy student rarely spoke up in class discussions.
害羞的学生很少在课堂讨论中发言。
A2 noun /ˈbɪljən/

billion

Meaning
the number 1,000,000,000 (one thousand million)
Example
The company is worth more than a billion dollars.
C1 noun /stɛlθ/

stealth

隐秘, 安静地移动
Meaning
The act of moving, doing, or achieving something quietly and secretly.
Example
The cat moved with stealth towards its prey.
猫悄悄地向它的猎物走去。
B2 adjective /ɪˈlɪt.ər.ət/

Illiterate

文盲; 不识字的; 无知的
Meaning
unable to read or write; lacking education
Example
The program aims to help illiterate adults learn to read and write.
该计划旨在帮助文盲成年人学习读写。
C2 adverb /ˈwɪtɪŋli/

wittingly

故意
Meaning
Consciously and intentionally; on purpose.
Example
He wittingly withheld information from the police.
他故意隐瞒了警方的信息。
C1 adjective /əˈbaɪdɪŋ/

abiding

持久的
Meaning
lasting for a long time; enduring
Example
She had an abiding love for her hometown.
她对故乡有着持久的爱。
B1 noun /ˈviːɪkəl/

Vehicle

车辆; 汽车; 媒介
Meaning
a thing used for transporting people or goods, especially on land; a means of expressing or displaying something
Example
The electric vehicle is becoming more popular these days.
电动汽车在这些日子里越来越受欢迎。