commotion
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C1 noun /kəˈmoʊʃən/

commotion

骚动
Meaning
A state of noisy confusion or disturbance.
Example
The sudden commotion in the market drew everyone's attention.
市场上的突然骚动吸引了所有人的注意。
C1 adjective ˈkɒn.təm.plə.tɪv

contemplative

沉思的或冥想的
Meaning
Expressing or involving prolonged thought; meditative and reflective.
Example
He spent a contemplative evening reflecting on his decisions.
他度过了一个沉思的晚上，反思他的决定。
C1 verb /rɪˈɡrɛs/

regress

Meaning
To return to a former or less developed state.
Example
Without proper guidance, the child's progress began to regress.
C1 noun ˈdʒɛnɪsɪs

genesis

起源, 创世
Meaning
The origin or mode of formation of something.
Example
The genesis of the internet changed the world forever.
互联网的起源永远改变了世界。
C1 noun /ˈəʊ.nəs/

onus

责任
Meaning
A duty or responsibility, especially a heavy one.
Example
The onus is on the government to provide relief to the victims.
政府有责任向受害者提供援助。
C1 noun /prəʊˌkræs.tɪˈneɪ.ʃən/

procrastination

拖延症，推迟任务
Meaning
The act of delaying or postponing tasks or activities.
Example
Procrastination is the enemy of success.
拖延症是成功的敌人。
C1 noun /fruˈɪʃən/

fruition

实现
Meaning
The realization or fulfillment of a plan, project, or desire.
Example
Her dream of becoming a doctor finally came to fruition.
她成为医生的梦想终于实现了。
C1 noun /ˈpɒlɪɡɒn/

polygon

多边形
Meaning
a flat shape with three or more straight sides
Example
The artist drew a colorful polygon on the canvas.
艺术家在画布上画了一个五彩的多边形。
C1 adjective /ˈmeɪkˌʃɪft/

makeshift

临时
Meaning
used as a temporary substitute; improvised
Example
They used boxes as a makeshift table.
他们用箱子作为临时桌子。
C1 adjective /ˈfɔːrθˌraɪt/

forthright

直率
Meaning
Direct and honest in speech or behavior; straightforward.
Example
She was forthright in her criticism of the policy.
她在批评政策时非常直率。
C1 adjective /frəˈtɜːrnəl/

fraternal

Meaning
Relating to brothers or brotherhood; friendly and supportive.
Example
The two nations maintain a fraternal relationship.
C1 adjective /ˈsek.j ə.l ər/

Secular

世俗的
Meaning
not connected with religious or spiritual matters; worldly
Example
The country maintains a secular government that separates religion from politics.
这个国家维持一个世俗的政府，将宗教与政治分离。
C1 noun /əˈpærəl/

apparel

衣服
Meaning
Clothing, especially formal or special clothes.
Example
The store specializes in wedding apparel.
商店专门出售婚礼服装。
C1 adjective /həˈred.ɪ.ter.i/

Hereditary

遗传的; 从祖先传承
Meaning
passed down through family genes; inherited from ancestors
Example
The hereditary disease was passed down through generations.
遗传性疾病通过几代人传递。
C1 verb /rɪˈtælieɪt/

retaliate

报复
Meaning
to make an attack in return for a similar attack
Example
The army retaliated after the enemy attack.
军队在敌人的攻击后进行了报复。
C1 adjective /ˈɪəri/

eerie

怪异
Meaning
Strange and frightening in a mysterious way.
Example
The abandoned house had an eerie silence.
那座废弃的房子里有一种怪异的沉默。
C1 noun /ˈblɛm.ɪʃ/

blemish

瑕疵
Meaning
A small mark or flaw that spoils the appearance of something.
Example
The mirror had a small blemish on the surface.
镜子表面有一个小瑕疵。
C1 adjective /kənˈɡrɛʃənl/

congressional

国会的
Meaning
relating to a congress, especially the US Congress
Example
The bill received strong congressional support.
该法案获得了强烈的国会支持。
C1 verb /ˌæprɪˈhɛnd/

apprehend

逮捕
Meaning
to arrest or seize someone; to understand or perceive something
Example
The police managed to apprehend the thief after a long chase.
警察在一场长时间的追逐后成功逮捕了小偷。
C1 verb/noun /skaʊl/

scowl

皱眉
Meaning
To frown in an angry or bad-tempered way.
Example
She scowled when she heard the unfair remark.
她听到不公正的评论时，皱起了眉头。
C1 verb /rɪˈsɜːrdʒ/

resurge

复兴
Meaning
To rise, increase, or become active again after a decline.
Example
Interest in traditional crafts has begun to resurge.
对传统手工艺的兴趣已经开始复兴。
C1 verb /ɡeɪp/

gape

张嘴凝视
Meaning
to stare with mouth wide open; to be wide open
Example
The crowd gaped at the amazing magic trick.
人群睁大眼睛，惊讶地看着魔术表演。
C1 noun əˌkred.ɪˈteɪ.ʃən

accreditation

认证
Meaning
The action or process of officially recognizing someone or something as having a particular status or being qualified to perform a particular activity.
Example
Accreditation ensures institutional credibility.
认证确保了机构的可信度。
C1 noun prəˈfaʊnd ɪˈnɪʃətɪv

profound initiative

深远的倡议
Meaning
A deep, meaningful, and significant action or program designed to create change.
Example
A profound initiative can create sustainable changes.
一个深刻的倡议可以创造可持续的变化。
C1 verb কনডেন্স

condense

凝结
Meaning
To change from gas to liquid form; to become denser.
Example
Water vapor condenses into raindrops.
水蒸气凝结成雨滴。
C1 /ˈdʒɛtɪsən/

jettison

抛弃
Meaning
to throw or drop something from a ship, aircraft, or vehicle to lighten the load; to abandon something no longer wanted
Example
The crew had to jettison cargo to save the sinking ship.
船员们不得不抛弃货物，以挽救沉船。
C1 adjective /ˈtæŋ.i/

tangy

辛辣
Meaning
Having a strong, sharp, and pleasantly biting flavor or taste.
Example
The sauce had a tangy flavor that brightened the dish.
这个酱料有一种辛辣的味道，让菜肴更加美味。
C1 verb diːˈsɛn.sɪ.taɪz

desensitize

脱敏
Meaning
To make someone less sensitive or reactive to something through repeated exposure.
Example
Constant exposure to violence can desensitize people.
持续的暴力暴露可能会使人们麻木。
C1 adjective /frəˈnɛtɪk/

frenetic

狂乱的
Meaning
Fast and energetic in a wild or uncontrolled way.
Example
The stock market experienced frenetic trading after the announcement.
公告后股市经历了狂乱的交易。
C1 adjective ˈbɜːdʒənɪŋ

burgeoning

蓬勃发展
Meaning
Beginning to grow or increase rapidly; flourishing.
Example
The burgeoning tech industry has attracted many investors.
这个蓬勃发展的技术行业吸引了许多投资者。
C1 verb /ˈbʌŋɡəl/

bungle

搞砸
Meaning
To carry out a task clumsily or incompetently.
Example
He bungled the presentation and confused the audience.
他搞砸了演示并让观众感到困惑。
C1 adjective /bɪˈrɛft/

bereft

失落的
Meaning
Deprived of or lacking something, especially a nonmaterial asset.
Example
After the betrayal, he felt bereft of hope and trust.
背叛后，他感到失落于希望和信任。
C1 noun /ˈek.stə.si/

Ecstasy

极乐
Meaning
an overwhelming feeling of great happiness or joyful excitement
Example
She was in complete ecstasy when she heard the good news.
她听到好消息时完全陷入了极乐。
C1 adjective ˌnɒnˈvɜːr.bəl

nonverbal

非语言
Meaning
Communication using body language, facial expressions, or gestures instead of words
Example
Nonverbal cues play a crucial role in effective communication.
非语言提示在有效沟通中起着至关重要的作用。
C1 noun ˌdjʊə.rəˈbɪl.ə.ti

durability

耐用性
Meaning
The ability to withstand wear, pressure, or damage; hard-wearing.
Example
The durability of materials affects performance.
材料的耐用性会影响性能。
C1 noun /ˌdʒiːniˈælədʒi/

genealogy

家谱学
Meaning
The study and tracing of lines of descent or family history.
Example
She spent years researching her family's genealogy.
她花了多年研究她家族的家谱学。
C1 noun /ˈnɛm.ə.sɪs/

nemesis

敌人 / 对手
Meaning
A long-standing rival or an inescapable agent of downfall.
Example
For years, he considered his colleague to be his nemesis.
多年来，他把同事当作自己的敌人。
C1 adjective /ɪˈlʌstriəs/

illustrious

著名
Meaning
Well known, respected, and admired for past achievements.
Example
She had an illustrious career in medicine.
她在医学界有着著名的事业。
C1 adjective /ˌʌnɪmˈplɔɪəbəl/

unemployable

不适合就业
Meaning
Not able to be employed; lacking the skills or qualities necessary for employment
Example
Due to his criminal record, he was considered unemployable in most companies.
由于他的犯罪记录，他在大多数公司被认为是不适合就业。
C1 noun ˌmɪtɪˈɡeɪʃən ˈstrætədʒiz

mitigation strategies

缓解策略
Meaning
Plans and actions designed to reduce the severity or impact of problems or risks.
Example
Governments must adopt mitigation strategies for climate change.
政府必须为气候变化采取缓解策略。
C1 adjective /ˈdɒɡɪd/

dogged

顽强
Meaning
showing stubborn determination and persistence
Example
She succeeded through dogged determination.
她通过顽强的决心取得了成功。
C1 noun /ˈkwæɡˌmaɪər/

quagmire

泥潭，困境
Meaning
a soft, wet area of land that gives way underfoot; a complex or dangerous situation
Example
The hikers were trapped in a political quagmire.
徒步旅行者被困在一个政治泥潭中。
C1 exclamation /juˈriːkə/

eureka

尤里卡!
Meaning
An exclamation used to express a sudden discovery or realization.
Example
When the solution finally came to him, he shouted, 'Eureka!'
当解决方案最终浮现在他脑海中时，他喊道：'尤里卡!'
C1 adjective /ɪnˈθrɔː.lɪŋ/

enthralling

引人入胜
Meaning
Captivating and holding one's attention completely; fascinating.
Example
The movie was enthralling, keeping the audience engaged till the end.
电影非常引人入胜，使观众直到最后都保持专注。
C1 verb /sɪndʒ/

singe

轻微燃烧
Meaning
To burn something superficially or lightly, especially at the edges.
Example
The fire singed his eyebrows.
火焰烧焦了他的眉毛。
C1 adjective /ˌhaɪdroʊɪˈlɛktrɪk/

hydroelectric

水力发电
Meaning
Relating to or denoting the generation of electricity using flowing water.
Example
The country invested heavily in hydroelectric power plants.
该国在水力发电厂上进行了大量投资。
C1 adjective /ˌhɔːrtɪˈkʌltʃərəl/

horticultural

园艺相关
Meaning
Relating to the art or practice of garden cultivation and management.
Example
She studied horticultural science at the university.
她在大学学习了园艺科学。
C1 verb /ˈlæmɪˌneɪt/

laminate

覆膜
Meaning
to cover or enclose something with a protective layer, usually plastic
Example
She laminated her important documents to protect them from damage.
她把重要的文件进行了塑料封面处理，以保护它们免受损坏。
C1 noun prəˈtɛk.ʃə.nɪ.zəm

protectionism

保护主义
Meaning
The theory or practice of shielding a country's domestic industries from foreign competition by taxing imports.
Example
The government's protectionism helped local businesses grow.
政府的保护主义帮助了本地企业的成长。
C1 verb /ænˈtæɡənaɪz/

antagonize

激怒
Meaning
to cause someone to become hostile or angry; to provoke opposition
Example
His rude remarks only served to antagonize his colleagues.
他粗鲁的言辞只会使同事们产生敌对情绪。
C1 noun /ˈbænɪstər/

banister

扶手栏杆
Meaning
a railing supported by posts at the side of a staircase or balcony
Example
She held the banister tightly while going down the stairs.
她在下楼时紧紧抓住扶手栏杆。
C1 adjective /ˈɡræn.jʊ.lər/

granular

颗粒状
Meaning
Consisting of small grains or particles; detailed and specific.
Example
The report provided a granular analysis of the market data.
报告提供了市场数据的详细分析。
C1 adjective /prəˈdɪdʒəs/

prodigious

惊人的
Meaning
remarkably or impressively great in extent, size, or degree
Example
The team made a prodigious effort to complete the project on time.
团队为按时完成项目做出了惊人的努力。
C1 noun/verb /skɜːrdʒ/

scourge

Meaning
A source of great pain or punishment; to whip or inflict suffering on someone.
Example
Disease and poverty remain a scourge in many regions.
C1 noun ˈprɒdʒ.ə.ni

progeny

后代, 子孙, 继承人
Meaning
A descendant or the descendants of a person, animal, or plant; offspring.
Example
The philosopher's teachings have influenced many generations of progeny.
哲学家的教义影响了许多代后代。
C1 noun /blɪs/

Bliss

极致的幸福；极大的喜悦
Meaning
perfect happiness; great joy
Example
She felt pure bliss while watching the beautiful sunset.
她在观看美丽的日落时感到纯粹的幸福。
C1 verb koʊˈɜrs

coerce

强迫
Meaning
To force someone to do something against their will using threats or intimidation.
Example
The manager tried to coerce the employees into working overtime.
经理试图迫使员工加班。
C1 noun /vʌlˈɡær.ɪ.ti/

Vulgarity

粗俗
Meaning
the quality of being rude, offensive, or indecent; lack of sophistication or good taste
Example
The comedian's jokes were criticized for their vulgarity.
喜剧演员的笑话因其粗俗而受到批评。
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。
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 adjective /ˈnjuː.ɑːnst/

nuanced

微妙的
Meaning
Characterized by subtle shades of meaning or expression; having fine gradations of meaning, tone, or feeling.
Example
His analysis of the novel was highly nuanced.
他对这部小说的分析非常微妙。
C1 noun /ˈfɔːrmən/

foreman

负责一组工人的人，特别是在工厂或建筑工地上
Meaning
a person in charge of a group of workers, especially in a factory or construction site
Example
The foreman supervised the workers on the construction site.
工头在建筑工地上监督工人。
C1 verb /aɪˈdiː.ə.laɪz/

idealize

理想化
Meaning
To regard or represent something as perfect or better than it really is.
Example
Children often idealize their parents.
孩子们常常理想化他们的父母。
C1 verb ˈdiː.vi.eɪt

deviate

偏离
Meaning
To depart from an established course or normal pattern.
Example
He tends to deviate from the original plan.
他倾向于偏离原计划。
C1 verb /ˈstriːmlaɪnɪŋ/

streamlining

精简
Meaning
The process of making an organization or system more efficient by simplifying or eliminating unnecessary steps
Example
Streamlining processes can significantly reduce operational costs.
精简过程可以显著减少运营成本。
C1 noun /ˌsɛnsɪtaɪˈzeɪʃən/

sensitization

敏感化
Meaning
The process of becoming sensitive to a substance, situation, or influence.
Example
The doctor warned about the sensitization caused by repeated exposure to chemicals.
医生警告了由于反复接触化学品引起的敏感化。
C1 noun /kənˈtɪnjuəm/

continuum

连续体
Meaning
A continuous sequence in which adjacent elements are not perceptibly different from each other, but the extremes are quite distinct.
Example
Life and death are often seen as part of the same continuum.
生与死常常被视为同一连续体的一部分。
C1 verb /səˈplænt/

supplant

取代
Meaning
To take the place of something or someone, often by force or strategy.
Example
Digital platforms have supplanted traditional newspapers.
数字平台已经取代了传统报纸。
C1 verb /ˈsɪn.θə.saɪz/

synthesize

合成
Meaning
To combine a number of things into a coherent whole.
Example
Scientists synthesize new compounds for medical research.
科学家为医学研究合成新的化合物。
C1 noun əˈɡrɛriən səˈsaɪətiz

agrarian societies

农业社会
Meaning
Societies based on agriculture and farming as the primary economic activity.
Example
Agrarian societies emerged from a need for stable food sources.
农业社会从对稳定食品来源的需求中产生。
C1 noun /ɔːˈdæs.ə.ti/

audacity

胆量
Meaning
The willingness to take bold risks; boldness or fearlessness.
Example
His audacity to question authority was admirable.
他质疑权威的胆量令人钦佩。
C1 adjective /dɪˈʃɛvəld/

disheveled

凌乱
Meaning
Untidy, messy, or in disorder, especially of hair or clothing.
Example
He arrived with disheveled hair and wrinkled clothes.
他带着凌乱的头发和皱巴巴的衣服来了。
C1 verb /ˈstæɡ.neɪt/

stagnate

停滞
Meaning
to stop developing, progressing, or moving
Example
Without innovation, the business will stagnate.
没有创新，生意将会停滞不前。
C1 adjective /ʌnˈsɪvəl/

Uncivil

不文明的; 粗鲁的;
Meaning
not polite or courteous; rude and discourteous in behavior
Example
His uncivil remarks during the meeting offended everyone present.
他在会议上的不文明言论冒犯了在场的每一个人。
C1 noun /prəˈpɛlər/

propeller

螺旋桨
Meaning
A mechanical device with blades that rotates to drive a ship, aircraft, or other vehicle forward.
Example
The airplane’s propeller cut through the air with great speed.
飞机的螺旋桨以极快的速度切割空气。
C1 noun /ˈstændˌstɪl/

standstill

停滞
Meaning
a situation in which all movement or activity stops
Example
The traffic came to a standstill after the accident.
事故发生后，交通陷入了停滞。
C1 noun /ˈpɒpjʊlɪst/

populist

民粹主义领导人
Meaning
A politician or person who seeks to appeal to ordinary people who feel their concerns are ignored by elites.
Example
The populist leader promised to put the needs of common citizens first.
民粹主义领导人承诺将普通公民的需求放在首位。
C1 verb /ˈɛm.jʊˌleɪt/

emulate

模仿
Meaning
to imitate someone or something with the intent to equal or surpass
Example
Young athletes often emulate their idols.
年轻运动员常常模仿他们的偶像。
C1 noun /ˈpæntəmaɪm/

pantomime

哑剧
Meaning
A type of theatrical performance using gestures and movements without spoken words; in Britain, a musical comedy play for families performed at Christmas.
Example
The children enjoyed the Christmas pantomime at the local theater.
孩子们在当地剧院观看了圣诞哑剧。
C1 noun ˌɪn.toʊˈneɪ.ʃən

intonation

语调
Meaning
The rise and fall of tone in speech and pronunciation.
Example
Proper intonation enhances the clarity of a speech.
正确的语调提高演讲的清晰度。
C1 noun /ɪˌlæbəˈreɪʃən/

elaboration

阐述 / 详细说明
Meaning
the process of adding more detail or expanding on something
Example
The teacher appreciated the student's elaboration of the topic.
老师欣赏了学生对主题的详细阐述。
C1 verb /ˈtɑːrnɪʃ/

tarnish

Meaning
To lose luster, especially as a result of exposure to air or moisture; to damage reputation.
Example
The silver jewelry tarnished quickly when left in the open air.
C1 adjective /ˈpɔːrəs/

porous

多孔的
Meaning
Having tiny holes that allow liquid or air to pass through.
Example
The soil is very porous and drains quickly.
土壤非常多孔，排水很快。
C1 adjective, noun /ˈmɑːrʃən/

martian

火星人
Meaning
Related to the planet Mars; or an imaginary being from Mars.
Example
The movie showed a Martian visiting Earth.
电影展示了一个火星人访问地球。
C1 noun /səbˈvɜːrʒən/

subversion

颠覆
Meaning
the act of trying to destroy or undermine an established system or authority
Example
The government accused the rebels of planning subversion.
政府指控叛军策划颠覆行为。
C1 noun /ˌɪndɪˈdʒɛstʃən/

indigestion

Meaning
Discomfort or pain in the stomach associated with difficulty in digesting food.
Example
He avoided spicy food because it often gave him indigestion.
C1 adjective kəʊˈhiː.sɪv

cohesive

凝聚力强
Meaning
Characterized by or causing cohesion; forming a united whole.
Example
The team displayed a cohesive strategy.
团队展示了一个凝聚力强的战略。
C1 noun /ˈhæm.lət/

Hamlet

小村庄
Meaning
a small rural settlement, smaller than a village; a small community
Example
The tiny hamlet nestled in the valley had only a dozen houses and one small church.
位于山谷中的小村庄只有十几座房子和一座小教堂。
C1 noun /ˈɔːrdɪnəns/

ordinance

法令
Meaning
An authoritative rule, law, or decree issued by a city, town, or authority.
Example
The city council passed an ordinance banning smoking in public parks.
市议会通过了一项法令，禁止在公共公园内吸烟。
C1 verb /bɪˈhoʊld/

behold

看见；目睹
Meaning
to see or observe something, especially something remarkable or impressive
Example
She stood quietly to behold the sunrise over the hills.
她静静地站着，目睹山上的日出。
C1 adjective /ˌkɒnvəˈlɛsnt/

convalescent

恢复中的，正在从疾病或治疗中恢复
Meaning
recovering from an illness or medical treatment
Example
The hospital has a special ward for convalescent patients.
医院有一个特别的病房，供恢复中的病人使用。
C1 adverb /ˈwɪmzɪkli/

Whimsically

任性地，异想天开地
Meaning
In a playful, fanciful, or capricious manner; with sudden changes of mind
Example
She decorated her room whimsically with colorful balloons.
她用五彩缤纷的气球任性地装饰了她的房间。
C1 noun /ˈklaɪəntɛl/

clientele

客户群
Meaning
The clients or customers of a professional person or business.
Example
The salon's clientele includes many high-profile individuals.
这个沙龙的客户群包括许多高端人士。
C1 verb /uːz/

ooze

渗透
Meaning
to slowly flow or leak out through small openings or pores
Example
Blood began to ooze from the small cut.
血液开始从小伤口渗透出来。
C1 adjective /ˌɪnɑːrˈtɪkjʊlət/

inarticulate

含糊不清
Meaning
Unable to express oneself clearly or effectively in speech or writing.
Example
She became inarticulate with emotion during the speech.
她在演讲中因为情绪而变得含糊不清。
C1 verb /ˌriːˈvæmp/

revamp

翻新
Meaning
To give a new and improved form, structure, or appearance to something.
Example
The company decided to revamp its website for a modern look.
公司决定重新设计其网站，以获得现代化外观。
C1 noun /ˈmæntl̩/

mantle

披风，责任
Meaning
A cloak or covering; also the layer of the earth between the crust and the core.
Example
The leader assumed the mantle of responsibility.
领导者承担起了责任的重担。
C1 preposition /əˈtɒp/

atop

顶部
Meaning
on the top of something
Example
A flag was placed atop the tower.
一面旗帜被放置在塔顶。
C1 noun /ˌkɔːriˈɒɡrəfi/

choreography

编舞
Meaning
The art of designing and arranging dances and movements.
Example
The choreography of the ballet was breathtaking.
芭蕾舞的编舞令人惊叹。
C1 adjective /ɪnˈvɛntɪv/

inventive

富有创意的
Meaning
Having the ability to create or design new things or to think originally.
Example
The inventor was known for his inventive solutions to everyday problems.
发明家以其富有创意的解决方案而闻名。
C1 verb, noun /læɡ/

lag

滞后或延迟
Meaning
To fall behind in movement, progress, or development; a delay or period of falling behind.
Example
The old computer tends to lag when running new software.
旧电脑在运行新软件时常常滞后。
C1 verb /ræsp/

rasp

Meaning
to speak in a rough, harsh voice or to scrape with a coarse sound
Example
He rasped out a warning before collapsing.
C1 noun /ˌɪnkəmˈpliːtnəs/

incompleteness

不完整性
Meaning
the state of not being complete or whole; lack of necessary parts or fullness
Example
The incompleteness of the report caused delays in the project.
报告的不完整性导致了项目延误。
C1 noun /ˈpluː.mɪdʒ/

plumage

羽毛
Meaning
the feathers covering a bird's body
Example
The peacock's plumage was vibrant and eye-catching.
孔雀的羽毛鲜艳夺目。
C1 noun ɪnˌɛv.ɪ.təˈbɪl.ɪ.ti

inevitability

必然性
Meaning
The quality of being certain to happen and impossible to avoid or prevent.
Example
The inevitability of change is a part of life.
变化的必然性是生活的一部分。
C1 adjective /ˈtækt.ləs/

tactless

失礼
Meaning
showing a lack of sensitivity in dealing with others
Example
His tactless remark embarrassed everyone at the meeting.
他的失礼评论让会议中的每个人都感到尴尬。
C1 noun ˌfɜːr.tɪ.laɪˈzeɪ.ʃən

fertilization

施肥
Meaning
The process of adding nutrients to soil to increase crop productivity.
Example
Organic fertilization enhances soil health.
有机施肥有助于改善土壤健康。
C1 noun /ˈʌndərˌstʌdi/

understudy

替身演员
Meaning
An actor who learns another's role to act as a replacement if needed.
Example
The understudy performed when the lead actor fell ill.
当主角生病时，替身演员上场表演。
C1 adjective /ˌsɛm.iˈæn.ju.əl/

semiannual

半年一次
Meaning
Occurring twice a year; every six months.
Example
The company holds a semiannual meeting with all employees.
公司每六个月举行一次会议。
C1 noun /tækˈtɪʃ.ən/

tactician

战术家
Meaning
a person who is skilled at planning and achieving goals, especially in military or business
Example
Napoleon was a brilliant tactician.
拿破仑是一个杰出的战术家。
C1 verb /dɪˈluːd/

delude

欺骗
Meaning
To mislead someone into believing something that is not true.
Example
He deluded himself into thinking he could win the race without training.
他欺骗自己认为自己可以不训练就赢得比赛。
C1 adjective /ɪnˈfæləbl̩/

infallible

无懈可击
Meaning
incapable of making mistakes or being wrong
Example
Her judgment seemed infallible in matters of finance.
她的判断在财务问题上似乎无懈可击。
C1 noun /ˈjuːnɪsən/

unison

齐声
Meaning
Simultaneous performance or utterance of action or speech.
Example
The choir sang in unison.
合唱团齐声唱歌。
C1 verb /blɜːrt/

blurt

突然说出
Meaning
to say something suddenly without thinking
Example
He blurts out the secret accidentally.
他不小心说出了秘密。
C1 noun /ˈʌp.tɜːn/

upturn

改善
Meaning
An improvement or upward trend in a situation, especially in business or economy.
Example
The company experienced an upturn in sales last quarter.
该公司在上个季度销售情况有所改善。
C1 noun ˈiːkəʊˌsɪstəm ˈsɜːvɪsɪz

ecosystem services

生态系统服务
Meaning
The benefits people obtain from ecosystems.
Example
Forests provide valuable ecosystem services, such as purifying air and water.
森林提供有价值的生态系统服务，如空气和水的净化。
C1 noun /ɪˈmɜː.ʃən/

immersion

沉浸
Meaning
Complete engagement in an environment or experience.
Example
Immersion in VR games makes users feel like they are inside the virtual world.
沉浸在虚拟现实游戏中让用户感觉自己仿佛置身于虚拟世界。
C1 noun /ˈsəʊdiəm/

sodium

钠
Meaning
a soft, silver-white chemical element that is highly reactive and found in salt.
Example
Sodium is an essential element for maintaining fluid balance in the body.
钠是维持体内液体平衡的必需元素。
C1 adjective /məˈlaɪn/

Malign

有害的；诽谤的
Meaning
evil in nature or effect; harmful; slanderous
Example
He spread malign rumors about his colleague.
他传播了关于他同事的有害谣言。
C1 adjective /ˈtæntəmaʊnt/

tantamount

等同
Meaning
Equivalent in seriousness or effect; virtually the same as.
Example
His refusal to speak was tantamount to an admission of guilt.
他拒绝讲话等同于承认有罪。
C1 noun /oʊˈmɪʃ.ən/

Omission

省略; 排除
Meaning
the action of excluding or leaving out someone or something; a failure to include
Example
The omission of his name from the list was intentional.
从列表中省略他的名字是故意的。