B1 adjective /ˈjuːnɪfɔːrm/

Uniform

制服

Meaning

consistent; identical; standardized

Example

All students must wear a uniform to school.

所有学生必须穿制服上学。

B1 adjective /ʌnˈjuː.ʒu.əl/

Unusual

不寻常; 奇怪;

Meaning

not typical; strange; different from what is normal

Example

She wore an unusual dress to the party.

她穿了一件不寻常的衣服去参加派对。

B2 adjective /ʌnˈiːzi/

Uneasy

不安的; 焦虑的; 不舒服的

Meaning

worried; anxious; uncomfortable; restless

Example

She felt uneasy about walking alone at night.

她在夜晚独自行走时感到不安。

C2 adjective /ʌnˈkɒnʃənəbl/

unconscionable

不合理的

Meaning

shockingly unfair or unreasonable

Example

The company made unconscionable profits from the crisis.

公司从危机中获得了不合理的利润。

C1 noun /ˈʌp.raɪt.nəs/

Uprightness

正直; 正义

Meaning

the quality of being honest and morally correct; integrity

Example

His uprightness in business dealings earned him great respect.

他在商业中的正直赢得了很大的尊重。

A1 preposition/conjunction /ʌnˈtɪl/

until

直到

Meaning

up to the time of

Example

I will wait until you come back.

我会等到你回来。

C1 noun /ʌnɪmˈpɔːrtəns/

unimportance

不重要

Meaning

the state or quality of being insignificant or not important

Example

He dismissed the issue with a sense of unimportance.

他以無關緊要的態度忽略了這個問題。

B1 adverb /ˌʌpsaɪd ˈdaʊn/

Upside-down

倒过来

Meaning

with the upper part at the bottom; in or into a reversed position

Example

The picture was hanging upside-down on the wall.

图片倒挂在墙上。

A1 adjective /juːzd/

used

二手

Meaning

having already been used

Example

This is a used car.

这是一辆二手车。

B1 adjective /ʌnˈpɒpjʊlə/

unpopular

不受欢迎的

Meaning

not liked or supported by many people

Example

The decision was unpopular with the public.

这个决定在公众中不受欢迎。

B2 adjective /ˌʌndɪˈstɜːrbd/

Undisturbed

未打扰

Meaning

not interrupted or interfered with; calm and peaceful

Example

She slept undisturbed for eight hours.

她睡了八个小时没有打扰。

B2 verb /ʌnˈfəʊld/

unfold

展开或打开

Meaning

to open or spread out something that was folded; to gradually reveal or develop

Example

She unfolded the letter carefully.

她小心地展开了信件。

C1 adjective /ʌnˈduː/

Undue

过度的; 不适当的; 超过必要或适当的

Meaning

excessive; inappropriate; more than is necessary or proper

Example

The teacher complained about undue pressure from parents.

老师抱怨家长施加的过度压力。

B1 adjective /ʌnˈjuzd/

Unused

未使用的; 没有被使用

Meaning

not being used; not having been used before

Example

There are many unused rooms in this old mansion.

这个古老的豪宅里有许多未使用的房间。

C2 adjective /ˌʌnəˈsweɪdʒd/

unassuaged

未缓解

Meaning

Not made less intense or relieved; unrelieved.

Example

His grief remained unassuaged despite the passage of time.

他的痛苦尽管时间流逝依然未缓解。

C2 adjective /juːˈnɪsənənt/

unisonant

和谐的

Meaning

Sounding together or in harmony.

Example

The unisonant voices created a powerful effect.

和谐的声音创造了强大的效果。

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。

C1 adjective /ˌʌn.əˈdʌl.tə.reɪ.tɪd/

Unadulterated

纯净的

Meaning

not mixed or diluted with any different or extra elements; pure

Example

She felt unadulterated joy when she heard the news.

当她听到这个消息时，她感到纯净的快乐。

B2 adjective /ʌnˈɑːrmd/

unarmed

手无寸铁

Meaning

Not equipped with or carrying weapons

Example

The police found the suspect unarmed during the search.

警察在搜查过程中发现嫌疑人没有武器。

C1 verb /ˌʌn.dəˈtʃɑːrdʒ/

undercharge

收取较少费用

Meaning

To charge less than the correct or fair amount.

Example

The shopkeeper accidentally undercharged me for the groceries.

店主不小心少收了我购买食品的钱。

C1 adjective /ʌnˈsteɪtɪd/

unstated

未声明

Meaning

not expressed directly in words; implied or left unsaid

Example

The contract included several unstated expectations.

合同包括了几个未声明的期望。

C1 adjective ʌnˈtʃɑːtɪd

uncharted

未标记

Meaning

Not mapped or surveyed; unknown or unexplored.

Example

The mission aimed to explore uncharted areas of the planet.

该任务旨在探索星球上未标记的区域。

C1 verb /ˌʌndərˈsteɪt/

understate

低估

Meaning

To describe something as being less important or serious than it really is.

Example

He tends to understate his achievements.

他倾向于低估自己的成就。

B1 adjective /ʌnˈkʊkt/

uncooked

生的

Meaning

Not cooked; in a raw state.

Example

Eating uncooked meat can be dangerous.

吃生肉可能是危险的。

C2 verb /juˈzɜrp/

usurp

篡位

Meaning

to take someone's position of power illegally or by force

Example

The general tried to usurp the king's throne.

将军试图篡夺国王的王位。

B2 adjective /ˌʌnəˈvɔɪdəbəl/

Unavoidable

不可避免的; 无法回避的; 必然的

Meaning

cannot be avoided; certain to happen; inevitable

Example

The meeting is unavoidable, so we must attend.

这个会议是无法避免的，我们必须参加。

B2 adjective /ʌnprɪˈpɛrd/

Unprepared

未准备好

Meaning

not ready or able to deal with something

Example

He was unprepared for the difficult exam.

他对困难的考试毫无准备。

C1 adjective /ʌnˈtʃælɪndʒd/

Unchallenged

无可争议的; 被接受的没有反对; 没有对手

Meaning

not disputed or questioned; accepted without opposition; having no rival

Example

He remained the unchallenged champion for five years.

他五年保持不败的冠军。

B1 adjective /ʌnˈfeər/

Unfair

不公平; 不正当;

Meaning

not right or just; treating people in a way that favors some over others

Example

It's unfair to blame her for something she didn't do.

指责她做了她没有做的事是不公平的。

B2 adverb /ʌnˈplɛzəntli/

unpleasantly

令人不快地

Meaning

in a way that causes discomfort, annoyance, or displeasure; in an unfriendly or disagreeable manner

Example

The room was unpleasantly hot during the afternoon.

下午房间里热得令人不快。

A1 noun /ˈʌŋkəl/

uncle

叔叔/舅舅

Meaning

the brother of one's father or mother

Example

My uncle is visiting us next week.

我的叔叔下周会来看我们。

C2 adjective /ʌpˈrɔːr.i.əs/

uproarious

极其滑稽

Meaning

Extremely funny or noisy; causing loud laughter or commotion.

Example

The comedian's jokes were absolutely uproarious.

喜剧演员的笑话绝对是极其滑稽的。

C1 verb /ˌʌndərˈsɛl/

undersell

Meaning

to sell something at a lower price than competitors or to downplay the value of something

Example

The shop undersold its rivals by offering huge discounts.

C1 adjective /ʌnˈʃeɪkən/

Unshaken

坚定不移; 坚固

Meaning

not disturbed or affected; firm and steady; unwavering

Example

Her faith remained unshaken despite all the challenges.

尽管面临所有挑战，她的信念依然坚定不移。

B2 adjective /ʌnˈθɪŋkəbl/

Unthinkable

难以想象的

Meaning

impossible to conceive or imagine; beyond belief or consideration

Example

It was unthinkable that such a tragedy could happen in our peaceful town.

在我们和平的小镇上发生这样一场悲剧，简直是难以想象的。

B2 adjective /ˌʌndɪˈzaɪərəbl/

Undesirable

不受欢迎的; 有害的; 令人不快的

Meaning

not wanted or wished for; harmful or unpleasant

Example

The new policy had several undesirable consequences.

新政策带来了几个不受欢迎的后果。

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。

C2 adjective /ʌnˈspɛərɪŋ/

unsparing

无情的

Meaning

Showing no mercy or generosity; harsh or severe.

Example

The critic was unsparing in his review of the play.

评论家在他的剧评中毫不留情。

B1 adjective /ʌnˈklɪər/

unclear

不清楚

Meaning

not easy to understand; vague or ambiguous

Example

The instructions were unclear, so I asked for clarification.

说明不清楚，所以我要求澄清。

C2 noun /ˈʌm.brə/

Umbra

完全的阴影，太阳黑子的黑暗中心

Meaning

the fully shaded inner region of a shadow cast by an opaque object; the dark center of a sunspot

Example

During the eclipse, we stood in the moon's umbra.

在日食期间，我们站在月亮的本影中。

C1 adjective /ʌnˈɒnəd/

unhonoured

未受尊敬的

Meaning

not respected or given the recognition that is deserved; treated without honor

Example

He felt unhonoured after his years of service were ignored.

他的多年服务被忽视后，他感到自己未受尊敬。

C1 adjective /ʌnˈkleɪmd/

Unclaimed

未认领的; 未要求的; 被遗弃或无主的

Meaning

not claimed by anyone; not demanded or requested; abandoned or ownerless

Example

The unclaimed luggage was stored in the airport's lost property department.

未认领的行李被存放在机场的失物招领处。

C1 adjective /ʌlˈtɪəriər/

ulterior

隐藏的动机

Meaning

hidden or secret, often with a selfish motive

Example

He invited her with an ulterior motive.

他带着隐藏的动机邀请了她。

C1 adjective /ˌʌnəˈteɪnəbl/

unattainable

无法实现的

Meaning

impossible to achieve, reach, or accomplish

Example

For many, becoming a professional athlete remains an unattainable dream.

对许多人来说，成为职业运动员仍然是一个无法实现的梦想。

B2 adverb /ʌnˈkaɪndli/

unkindly

残忍地

Meaning

in a cruel, harsh, or unsympathetic manner

Example

She spoke unkindly about her colleague during the meeting.

她在会议期间残忍地谈论了她的同事。

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。

A2 noun /ʌmˈbrɛlə/

umbrella

伞

Meaning

A device used for protection against rain or sun, typically consisting of a collapsible canopy mounted on a central rod.

Example

She opened her umbrella as it started to rain.

下雨时她打开了她的伞。

C1 adjective /ʌnˈfɔːltərɪŋ/

unfaltering

坚定不移

Meaning

Steady and resolute; not weakening or hesitating

Example

She continued with unfaltering determination.

她以坚定不移的决心继续前进。

C1 adjective /ʌnˈsəʊʃəl/

unsocial

不合群的

Meaning

not enjoying the company of others; avoiding social interaction; contrary to social norms

Example

He prefers unsocial hours so he can work alone without interruptions.

他更喜欢不合群的工作时间来独自工作。

B2 noun ˌɜːbənaɪˈzeɪʃən

urbanization

城市化

Meaning

The process by which towns and cities are formed and become larger as more people begin living and working in central areas.

Example

Urbanization leads to more developed infrastructure.

城市化导致更先进的基础设施。

C2 adjective /ˌʌnrɪˈmɪtɪŋ/

unremitting

不断的

Meaning

Never relaxing or stopping; persistent.

Example

Her unremitting efforts finally paid off.

她不懈的努力终于得到了回报。

C1 noun /juːˈtoʊpiə/

utopia

乌托邦

Meaning

An imagined perfect society or place where everything is ideal.

Example

Many philosophers dreamed of creating a utopia for humanity.

许多哲学家梦想着为人类创造一个乌托邦。

C1 adjective /ʌnˈsɪvəlaɪzd/

Uncivilized

未开化的; 野蛮的;

Meaning

not developed in terms of civilization; lacking social organization and culture; barbarous

Example

The explorers encountered an uncivilized tribe deep in the Amazon rainforest.

探险者在亚马逊雨林深处遇到一个未开化的部落。

B2 adverb juːˈnæn.ɪ.məs.li

unanimously

一致通过

Meaning

With the agreement of all people involved; without opposition.

Example

The proposal was unanimously accepted.

提案得到了全体一致通过。

C1 adjective /ˌʌnkɒnstɪˈtuːʃənəl/

Unconstitutional

违宪的

Meaning

not in accordance with a political constitution; violating constitutional principles

Example

The court declared the new law unconstitutional.

法院宣布这项新法律违宪。

B2 adjective /ʌnˈsiːn/

Unseen

看不见的；未曾看到或注意到的

Meaning

not previously seen or noticed; invisible; hidden

Example

The unseen forces of nature can be very powerful.

自然界的看不见的力量可能非常强大。

B2 adjective /ʌnˈendɪŋ/

Unending

无尽的

Meaning

continuing forever; without end

Example

The unending rain made the day feel gloomy.

无尽的雨让这一天显得阴沉。

A2 adjective /ʌnˈtaɪdi/

Untidy

凌乱的; 无序的;

Meaning

not neat or orderly; messy and disorganized

Example

Her untidy room was filled with clothes scattered everywhere.

她凌乱的房间充满了四处散落的衣服。

B2 noun /ˈʌndərkləʊðz/

underclothes

内衣

Meaning

Clothing worn beneath outer clothes, such as underwear or lingerie

Example

He folded his underclothes neatly before packing them.

他在打包前把内衣叠得整整齐齐。

B1 adjective /juːˈnaɪtɪd/

United

联合的; 一致的; 团结的

Meaning

joined together for a common purpose; in agreement

Example

The team was united in their goal to win.

团队在他们的目标上达成了统一。

C2 adjective /ɜːrˈbeɪn/

urbane

都市的

Meaning

showing polished manners, refinement, and sophistication

Example

He was an urbane gentleman who charmed everyone at the party.

他是一个都市绅士，在派对上迷住了所有人。

B1 verb /ʌnˈpæk/

unpack

拆开

Meaning

to remove items from a container; to explain or analyze something in detail

Example

After arriving home, she began to unpack her suitcase.

到家后，她开始拆开自己的行李箱。

B2 adjective /ʌnˈwɪl.ɪŋ/

Unwilling

不愿意的; 不情愿的;

Meaning

not ready to do something; reluctant; not wanting to do

Example

He was unwilling to share his secret with anyone.

他不愿意与任何人分享他的秘密。

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。

B2 adjective /ʌnˈhɜːrt/

unhurt

毫发无损

Meaning

Not injured or harmed.

Example

She walked away from the accident unhurt.

她在事故中毫发无损。

B1 adjective /ʌnˈfɔːr.tʃən.ət/

Unfortunate

不幸的；遗憾的

Meaning

having bad luck; regrettable or unlucky

Example

It was unfortunate that the meeting was cancelled at the last minute.

很不幸的是，会议在最后一刻被取消了。

C2 verb /ˈʌndjʊleɪt/

undulate

波动

Meaning

To move with a smooth, wave-like motion.

Example

The snake undulated across the sand.

蛇在沙滩上蜿蜒前行。

C2 adjective /ʌnˈtræməld/

untrammeled

无限自由

Meaning

Not restricted or hampered; free and unrestricted.

Example

She enjoyed untrammeled freedom in her new life abroad.

她在国外的新生活中享受着无限自由。

B2 noun /ˈjuː.sɪdʒ/

Usage

使用

Meaning

the action of using something; the way in which words are used in a language

Example

The dictionary explains the correct usage of difficult words.

词典解释了难词的正确用法。

B1 noun /ˈjuːnjən/

Union

联合

Meaning

the action of joining or combining; a political unit formed from separate states

Example

The union of the two companies created a powerful corporation.

两家公司的联合创造了一个强大的公司。

C1 adjective /ʌnˈmænɪdʒəbəl/

Unmanageable

无法控制的; 失控

Meaning

difficult or impossible to control or handle

Example

The large class became unmanageable without proper supervision.

没有适当的监督，班级变得无法控制。

B2 adjective /ˌʌnprɪˈdɪktəbəl/

unpredictable

不可预测的

Meaning

not able to be predicted; changing suddenly and unexpectedly

Example

The weather in this region is highly unpredictable.

这个地区的天气非常不可预测。

C2 adjective /ˌʌltrəˈmɒnteɪn/

ultramontane

教皇支持者

Meaning

beyond the mountains, especially referring to support for the Pope over local church authority

Example

The debate highlighted the ultramontane position in church politics.

辩论突出了教会政治中超山的立场。

B1 adjective /ʌnˈeɪ.bəl/

Unable

无法

Meaning

lacking the power, skill, or means to do something

Example

He was unable to attend the meeting.

他无法参加会议。

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 /ʌnkənˈsɜːrn/

Unconcern

漠不关心

Meaning

lack of worry or interest; indifference

Example

She showed complete unconcern about the criticism.

她对批评表现出了完全的漠不关心。

B2 noun /ˈʌpˌkiːp/

up-keep

维护

Meaning

The process or cost of maintaining something in good condition.

Example

The upkeep of the old house is very expensive.

老房子的维护非常昂贵。

C2 noun /ˈʌŋkʃən/

unction

涂抹

Meaning

The act of anointing as part of a religious or ceremonial ritual; excessive or insincere flattery.

Example

The priest performed the holy unction with solemnity.

牧师庄重地进行了神圣的涂抹仪式。

C2 adjective /ˌʌnprəˈpɪʃəs/

unpropitious

不利

Meaning

Not giving or indicating a good chance of success; unfavorable.

Example

The team began their journey under unpropitious weather conditions.

团队在不利的天气条件下开始了他们的旅程。

B2 verb /ˌʌndərˈteɪk/

undertake

承担

Meaning

to commit to and begin a task or project; to take on responsibility

Example

She decided to undertake a challenging project.

她决定承担一个具有挑战性的项目。

C1 adjective /ˌʌndərɪkˈspoʊzd/

underexposed

曝光不足，忽视的

Meaning

insufficiently exposed to light (in photography) or not given enough attention

Example

The photo was underexposed and looked too dark.

照片曝光不足，看起来太暗了。

C1 adjective /ʌnˈmaɪndfəl/

Unmindful

不留心的; 疏忽的;

Meaning

not paying attention; careless; heedless

Example

She was unmindful of the danger around her.

她没有注意到周围的危险。

B2 adjective /ˌʌn.əkˈsep.tə.bəl/

Unacceptable

不可接受

Meaning

not satisfactory or allowable; not acceptable

Example

The quality of work was completely unacceptable.

工作质量完全不可接受。

C2 noun /ˈʌndərlɪŋ/

underling

下属

Meaning

a person of low rank or importance; a subordinate

Example

The manager ordered his underlings to finish the task quickly.

经理命令他的下属快速完成任务。

C1 verb /ʌnˈroʊl/

unroll

展开

Meaning

to open something that is rolled up; to spread out gradually

Example

She unrolled the map on the table to find the route.

她把地图在桌子上展开来寻找路线。

B2 verb /ʌpˈhoʊld/

uphold

维护

Meaning

to maintain or support a principle, law, or decision

Example

The judge promised to uphold justice at all costs.

法官承诺不惜一切代价维护正义。

C2 adjective /juːˈʒʊəriəs/

usurious

高利贷的

Meaning

Charging excessively high interest rates on loans.

Example

The bank was accused of offering loans at usurious rates.

该银行被指控以高利贷利率提供贷款。

B2 adjective /ˌjuːnɪˈvɜːrsəl/

Universal

普遍的

Meaning

applicable to all cases; existing everywhere

Example

Music is a universal language that everyone understands.

音乐是一种普遍的语言，人人都能理解。

B1 adjective /ˈɜːrdʒənt/

Urgent

紧急

Meaning

requiring immediate action or attention; pressing

Example

The patient needs urgent medical attention.

病人需要紧急医疗照顾。

C1 adjective /ˌjuːnɪˈsɛljʊlər/

unicellular

单细胞

Meaning

Consisting of a single cell.

Example

Amoebas are unicellular organisms.

变形虫是单细胞生物。

B1 adjective /juːˈniːk/

Unique

独特的; 唯一的; 稀有的

Meaning

being the only one of its kind; unlike anything else

Example

Every snowflake is unique in its pattern.

每一片雪花在它的图案中都是独一无二的。

C2 adjective /ˈʌndjʊləs/

undulous

波浪形的

Meaning

Having a wavy surface or form.

Example

The artist painted the undulous sea at sunset.

艺术家在日落时画了波浪形的海洋。

C1 adjective /ˌʌnˈɪntɪmeɪtɪŋ/

unintimating

没有暗示

Meaning

Not giving a hint or suggestion; not indicating.

Example

His unintimating tone gave no clue of his true feelings.

他的没有暗示的语气没有透露他真正的感受。

B1 adverb /ʌnˈfɔːrtʃənətli/

Unfortunately

不幸地

Meaning

used to express regret or disappointment about something

Example

Unfortunately, the weather was bad for our picnic.

很遗憾，天气不适合我们的野餐。

C1 verb /ˌʌndərˈvæljuː/

undervalue

低估

Meaning

To assign too low a value or importance to something or someone.

Example

She felt that her boss consistently undervalued her contributions.

她感觉到她的老板总是低估她的贡献。

C1 adjective /ˌʌnbɪˈliːvɪŋ/

unbelieving

不相信的

Meaning

Not willing or able to believe; skeptical or doubtful

Example

She gave him an unbelieving look when he claimed to have met a celebrity.

当他声称见过一位名人时，她给了他一个不相信的眼神。

C2 adjective /ˌʌnəˈʃʊəd/

unassured

不确定的

Meaning

Lacking confidence or certainty.

Example

She gave an unassured answer during the interview.

她在面试中给出了一个不确定的答案。

C2 verb /ʌnˈkloʊð/

unclothe

脱衣; 脱掉衣服

Meaning

to remove clothing from someone or something

Example

The nurse helped unclothe the patient for the examination.

护士帮助病人脱衣进行检查。

B1 adjective /ʌnˈlaɪkli/

Unlikely

不太可能; 不大可能

Meaning

not likely to happen; improbable

Example

It's unlikely to rain today with such clear skies.

今天晴空万里，几乎不可能下雨。

C2 verb /ʌpˈhiːv/

upheave

抬起

Meaning

to lift or raise something forcefully; to cause to rise suddenly

Example

The workers had to upheave the heavy stone to clear the path.

工人们不得不抬起重石来清理道路。

A1 preposition /ˈʌndər/

under

下

Meaning

in or to a lower position than something

Example

The cat is under the table.

猫在桌子下面。

B2 verb /ˌʌndərˈɡoʊ/

undergo

经历

Meaning

to go through something, especially something unpleasant or difficult

Example

She had to undergo surgery to recover.

她不得不接受手术以恢复。

C1 adjective /ˌʌnəbˈtruːsɪv/

unobtrusive

不引人注目

Meaning

not attracting attention; blending in without causing notice

Example

The security cameras are designed to be unobtrusive.

安全摄像头被设计成不引人注目。

B2 adjective /ʌnˈsteɪbəl/

Unstable

不稳定

Meaning

likely to change; not steady or secure; unsteady

Example

The unstable economy made people worried about their jobs.

不稳定的经济让人们担心他们的工作。

A2 noun /ˌʌpˈsteəz/

Upstairs

楼上

Meaning

on or to an upper floor of a building; the upper floor or floors

Example

She went upstairs to her bedroom to rest.

她上楼去她的卧室休息。

C1 verb /ʌnˈkɔrk/

uncork

开瓶

Meaning

To remove the cork from a bottle; to open a bottle, especially of wine

Example

He uncorked the wine and poured a glass for everyone.

他开了葡萄酒，并为每个人倒了一杯。

C1 adjective ʌnˈmætʃt

unmatched

无与伦比

Meaning

Not equaled or rivaled by any other; without equal.

Example

The freedom fighters showed unmatched bravery.

自由战士们展示了无与伦比的勇气。

C1 adjective /ʌnˈtʌtʃəbəl/

Untouchable

不可触碰的; 无法批评或攻击

Meaning

not able to be touched or affected; beyond criticism or attack

Example

The CEO seemed untouchable despite the scandal.

即使有丑闻，首席执行官似乎仍然是不可触碰的。

B2 adjective /ʌnˈdʒʌst/

Unjust

不公正的; 错误的

Meaning

not fair or right; morally wrong

Example

The punishment was unjust for such a minor offense.

这个惩罚对于如此轻微的罪行来说是不公正的。

B2 noun /ˌʌndəˈɡrædʒuət/

undergraduate

本科生

Meaning

a student who has not yet earned a bachelor's degree

Example

She is an undergraduate studying computer science.

她是一个学习计算机科学的本科生。

C1 adjective /ˌʌnsəˈfɪstɪˌkeɪtɪd/

unsophisticated

不复杂

Meaning

Lacking worldly experience, refinement, or complexity.

Example

The villagers led an unsophisticated but happy life.

村民过着简单而幸福的生活。

B2 adjective /ˌʌnˈkɔːrdɪneɪtɪd/

uncoordinated

不协调; 笨拙

Meaning

lacking coordination, not well-organized or clumsy in movement

Example

His movements were uncoordinated, making him prone to accidents.

他的动作不协调，使他容易发生意外。

C2 verb /ʌnˈfrɒk/

unfrock

剥夺神职

Meaning

To remove a priest from his position or deprive someone of a rank.

Example

The corrupt priest was unfrocked after the investigation.

腐败的牧师在调查后被解除职务。

A2 preposition /əˈpɒn/

upon

之后

Meaning

on or immediately after

Example

Upon hearing the news, he rushed to the hospital.

听到消息后，他赶到医院。

C2 adjective /ʌnˈtʃeɪst/

Unchaste

不道德的; 不纯洁的;

Meaning

not celibate; having engaged in sexual relations; lacking moral purity

Example

The conservative society considered her behavior unchaste and improper.

保守的社会认为她的行为不道德和不合适。

B2 adjective /ˌʌndɪˈnaɪəbl/

Undeniable

不容置疑

Meaning

impossible to deny or dispute; clearly true

Example

The evidence of his guilt was undeniable.

他的罪行证据是不容置疑的。

C2 adjective /ʌnˈtɛmpərd/

untempered

失控的

Meaning

not moderated or softened; lacking proper balance or control

Example

The untempered anger of the crowd caused chaos.

人群的失控愤怒引发了混乱。

B2 adverb /ˈɜːrdʒəntli/

urgently

紧急地

Meaning

in a way that requires immediate attention or action

Example

The patient urgently needs medical attention.

病人紧急地需要医疗救助。

A2 noun /ˌʌndərˈstændɪŋ/

understanding

理解

Meaning

the ability to grasp the meaning, significance, or nature of something

Example

Her understanding of the issue was impressive.

她对这个问题的理解令人印象深刻。

C1 adjective /ˌʌnɪnˈhɪbɪtɪd/

uninhibited

不受抑制的

Meaning

Not restrained or restricted; free in behavior or expression.

Example

She gave an uninhibited laugh at the joke.

她在笑话中放声大笑。

B1 adjective ʌnˈplænd

unplanned

未计划的

Meaning

Not planned or arranged in advance; happening spontaneously without preparation.

Example

Unplanned urbanization contributes to environmental issues.

无计划的城市化会加剧环境问题。