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。

C2 noun juːˈbɪkwɪti

ubiquity

普遍性

Meaning

The fact of appearing everywhere or of being very common.

Example

The ubiquity of smartphones has transformed communication.

智能手机的普遍性改变了通信方式。

C1 adjective ʌnˈpær.ə.leld

Unparalleled

无与伦比

Meaning

Having no equal; unmatched, peerless, and supreme in quality or achievement.

Example

The unparalleled beauty of the Taj Mahal amazes visitors.

泰姬陵无与伦比的美丽使游客惊叹。

B2 adjective /ˌʌnɪnˈtenʃənəl/

Unintentional

非故意的；意外的

Meaning

not done on purpose; accidental

Example

The damage to the car was unintentional.

车的损坏是非故意的。

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 /ʌnˈriːzənəbəl/

unreasonable

不合理的

Meaning

not guided by reason or fairness; excessive or extreme beyond what is acceptable

Example

The manager made an unreasonable demand that no one could realistically meet.

经理提出了一个不合理的要求。

C2 adjective /ʌnˈlɛtəd/

unlettered

文盲

Meaning

lacking education or the ability to read and write; illiterate

Example

The unlettered villagers relied on oral traditions to preserve their history.

那些文盲村民依赖口头传统来保存他们的历史。

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。

A2 adjective /ˈʌɡ.li/

Ugly

丑陋的; 可憎的; 可怕的

Meaning

unpleasant or repulsive in appearance; morally reprehensible

Example

The old building looked ugly after years of neglect.

这座老建筑在多年疏忽之后看起来很丑。

C1 adjective /ʌnˈkuːθ/

uncouth

粗鲁

Meaning

Lacking good manners, refinement, or grace; awkward or rough.

Example

His uncouth behavior shocked the guests at the party.

他粗鲁的行为让聚会上的客人感到震惊。

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 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。

B1 adjective /ʌnˈnoʊn/

Unknown

未知

Meaning

not known or identified; unfamiliar

Example

The author of this letter remains unknown.

这封信的作者仍然未知。

C2 adjective /ˌʌnɪmˈpiːtʃəbl/

unimpeachable

无可指摘

Meaning

Not able to be doubted, questioned, or criticized; completely trustworthy.

Example

She is known for her unimpeachable honesty.

她因其无可指摘的诚实而闻名。

Meaning

Not anticipated or predicted; unexpected.

Example

The project faced unforeseen challenges that delayed its completion.

B1 adjective /ˌʌnˈɪntrəstɪŋ/

uninteresting

无趣的

Meaning

not holding attention or curiosity; boring

Example

The lecture was uninteresting and difficult to stay focused on.

这次讲座很无趣，很难集中注意力。

B2 adjective /ʌnˈstɛdi/

unsteady

不稳定的

Meaning

not firm or stable; likely to change or fail

Example

She felt unsteady on her feet after the long journey.

长途旅行后，她感到站立不稳。

B1 adjective /ʌnˈwɒn.tɪd/

Unwanted

不受欢迎的

Meaning

not desired or welcome; not wanted

Example

He felt like an unwanted guest at the meeting.

他在会议上觉得自己像个不受欢迎的客人。

B2 adjective /ʌnˈiːvən/

Uneven

不平; 粗糙

Meaning

not level or smooth; not regular or consistent

Example

The road was uneven and full of potholes.

那条路不平，充满了坑洞。

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。

A1 interjection /ʌ/

uh

呃

Meaning

a sound people make when they hesitate or are unsure what to say next.

Example

Uh, I’m not sure if that’s the right answer.

呃，我不确定这是不是正确的答案。

B1 noun /juːˈten.səlz/

Utensils

餐具

Meaning

tools or implements used for cooking, eating, or serving food

Example

Please wash all the cooking utensils after preparing dinner.

请在准备晚餐后清洗所有的厨房用具。

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 /ʌnˈvaɪəbl/

unviable

不可行的

Meaning

Not capable of working successfully; not feasible or practical.

Example

The project was deemed unviable due to high costs.

由于高昂的成本，该项目被认为不可行。

C1 adjective /ʌnˈdɔːntɪd/

Undaunted

无畏的; 勇敢的; 不屈的;

Meaning

not intimidated or discouraged by difficulty, danger, or disappointment

Example

Despite the setbacks, she remained undaunted in pursuing her goals.

尽管遇到挫折，她在追求目标时依然无畏。

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。

C2 adjective /ʌnˈsʌlid/

unsullied

无暇

Meaning

not spoiled or made impure; perfectly clean or pure

Example

His reputation remained unsullied despite the accusations.

尽管有指控，他的声誉仍然无暇。

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 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。

B1 adjective /ˌʌnsəkˈsesfl/

Unsuccessful

失败的; 没有成功的;

Meaning

not achieving desired aims or results; failing to accomplish a purpose

Example

His unsuccessful attempt to climb the mountain left him disappointed.

他未能成功登上山顶，感到失望。

B1 noun /ˌʌnɪmˈplɔɪmənt/

Unemployment

失业

Meaning

the state of being unemployed; lack of paid work

Example

The unemployment rate has increased significantly this year.

今年失业率显著上升。

C1 adjective /ʌnˈkwes.tʃən.ə.bl̩/

Unquestionable

无可争议的; 确定的

Meaning

not able to be disputed or doubted; certain and beyond doubt

Example

Her honesty and integrity are unquestionable qualities.

她的诚实和正直是无可争议的品质。

C1 adjective /ʌnˈseɪvəri/

unsavory

令人不快

Meaning

Disagreeable, unpleasant, or morally offensive.

Example

The politician was linked to an unsavory scandal.

那位政治家与一宗令人不快的丑闻有关。

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 noun /ʌpˈhiːvəl/

upheaval

动荡

Meaning

a violent or sudden change or disruption to something

Example

The company faced a major upheaval after the sudden resignation of its CEO.

公司在其CEO突然辞职后经历了巨大的动荡。

C1 adjective /ˌʌnfɔːrθˈkʌmɪŋ/

unforthcoming

不合作的

Meaning

Not willing to talk or provide information; uncooperative.

Example

The witness was unforthcoming about what he had seen.

证人对于他所见的情况不合作。

C2 noun /ˈʌŋɡwənt/

unguent

药膏

Meaning

A soothing or healing ointment applied to the skin.

Example

The doctor applied an unguent to heal the burn.

医生涂抹了药膏来治愈烧伤。

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。

B2 adjective /juːˈnæn.ɪ.məs/

Unanimous

一致的

Meaning

fully in agreement; shared by all

Example

The committee reached a unanimous decision.

委员会达成了一致的决定。

B2 adjective /ˈʌl.tɪ.mət/

Ultimate

最终的; 极致的; 终极的

Meaning

being the best or most extreme example of its kind; final; last

Example

This is the ultimate test of your skills.

这是你技能的终极考验。

A1 pronoun /ʌs/

us

我们

Meaning

used to refer to the speaker and one or more other people as the object of a verb or preposition

Example

She gave us a gift.

她给了我们一个礼物。

C2 noun /ˈjuːʒəri/

usury

高利贷

Meaning

The practice of lending money at unreasonably high interest rates.

Example

The law strictly prohibits usury.

法律严格禁止高利贷。

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 /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 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。

A1 adjective /ˈjuːs.fəl/

Useful

有用的; 实用的

Meaning

having a beneficial purpose; practical

Example

This tool is very useful for fixing problems.

这个工具对解决问题非常有用。

B2 adjective /ˌʌnəˈveɪləbəl/

unavailable

不可用

Meaning

Not able to be obtained, reached, or used; not present or accessible.

Example

The manager was unavailable to take calls during the meeting.

经理在会议期间不可用，无法接听电话。

C2 noun /ˈʌn.dɚˌstɔː.ri/

understory

下层植被

Meaning

The layer of vegetation beneath the main canopy of a forest.

Example

The understory of a rainforest is home to small mammals and insects.

雨林的下层植被是小型哺乳动物和昆虫的家园。

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。

C1 noun /ˈʌndərdɒɡ/

underdog

逆袭者

Meaning

a competitor thought to have little chance of winning; a weaker party in a contest

Example

The underdog team surprised everyone by winning the championship.

逆袭者队伍通过赢得锦标赛让所有人都惊讶。

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 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。

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。

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。

C2 noun /ˈjuːzjuːfrʌkt/

usufruct

使用权

Meaning

The legal right to use and enjoy the benefits of someone else’s property without owning it.

Example

The tenant had the usufruct of the land but not its ownership.

租户有权使用这片土地，但没有所有权。

C1 adjective /ʌnˈsɜːrvɪsəbəl/

Unserviceable

无法使用的; 有缺陷的

Meaning

not in working order; unable to be used; defective

Example

The old computer became unserviceable after the system crash.

那台旧电脑在系统崩溃后变得无法使用。

C2 adjective /ˌʌnsɛrəˈmoʊniəs/

unceremonious

不拘礼节/粗鲁

Meaning

Done without formality or courtesy; abrupt or rude.

Example

He made an unceremonious exit from the party.

他从派对上不拘礼节地离开。

B2 adjective /ˈʌt.moʊst/

Utmost

最极; 极限

Meaning

greatest; most extreme; maximum possible

Example

She showed utmost care while handling the fragile items.

她在处理脆弱物品时表现出最大的关心。

B1 adjective /ˈɜːrbən/

urban

城市的

Meaning

related to, characteristic of, or situated in a city or town

Example

Urban areas often have higher population density than rural areas.

城市地区通常比乡村地区有更高的人口密度。

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。

B2 adjective /ʌnˈskɪld/

Unskilled

无技能的; 无技术的工人

Meaning

lacking technical training or ability; not requiring special skills

Example

Many unskilled workers are looking for training opportunities.

许多没有技能的工人正在寻找培训机会。

B2 adjective /ʌnprəˈfɛʃ.ən.əl/

Unprofessional

不专业

Meaning

not conforming to the standards expected in a particular profession

Example

His unprofessional behavior led to his dismissal from the company.

他的不专业行为导致他被公司解雇。

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。

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。

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。

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。

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。

C1 adjective /ˌʌnəˈsjuːmɪŋ/

unassuming

谦虚

Meaning

Not pretentious or arrogant; modest.

Example

Despite his success, he remained unassuming and humble.

尽管他取得了成功，他仍然谦虚和谦逊。

B2 noun ˌjuːtɪlaɪˈzeɪʃən

utilization

利用

Meaning

The action of making practical and effective use of something.

Example

Increased plastic utilization calls for better waste management.

塑料的使用增加要求更好的废物管理。

B2 noun /ˈɜː.dʒən.si/

Urgency

紧急

Meaning

the quality of requiring immediate action or attention; pressing importance

Example

The urgency of the situation required immediate medical attention.

情况的紧急性要求立即的医疗关注。

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 /ʌnˈhɜːd/

Unheard

未听到的; 未知的

Meaning

not heard or listened to; not given a hearing; unknown or unfamiliar

Example

His complaints went unheard by the management.

他的投诉没有被管理层听到。

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 adjective /ʌnˈfeɪv(ə)rəbəl/

unfavorable

不利

Meaning

not beneficial or advantageous; showing disapproval or opposition

Example

The proposal received an unfavorable response from the committee.

提案收到了委员会的负面回应。

B1 adjective /ˌʌndərˈstændəbl/

understandable

可以理解的

Meaning

Able to be understood; reasonable or justifiable.

Example

Her reaction was understandable given the situation.

考虑到情况，她的反应是可以理解的。

C1 adjective /ˈʌpərˌmoʊst/

uppermost

最高

Meaning

situated at the highest place or most important

Example

Her family's safety was uppermost in her mind during the crisis.

她在危机期间心里最重要的是家庭的安全。

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。

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。

B2 adjective /ʌnˈdɪvaɪdɪd/

Undivided

完整的; 完全的; 不分开或不分裂

Meaning

whole; complete; not separated or split

Example

The team showed undivided attention to the coach's instructions.

团队对教练的指示表现出了完整的注意力。

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 noun /ˈʌp.rɔːr/

Uproar

骚动; 喧嚣; 混乱

Meaning

a loud and emotional noise or disturbance; public outcry

Example

The announcement caused an uproar among the students.

公告在学生中引起了骚动。

C1 adjective /ˌʌndərˈsaɪzd/

undersized

尺寸过小

Meaning

Smaller than the usual or expected size.

Example

The undersized puppy struggled to keep up with its siblings.

这只尺寸过小的小狗很难跟上它的兄弟姐妹。

C2 adjective /ʌnˈælɔɪd/

unalloyed

纯净

Meaning

Pure, complete, and not mixed with anything else.

Example

She felt unalloyed joy at the news of her success.

她听到成功的消息时感到纯粹的喜悦。

C1 adjective /ʌnˈtaɪmli/

Untimely

不合时宜

Meaning

happening at an inappropriate or inconvenient time; premature

Example

His untimely death at the age of thirty shocked everyone.

他的过早死亡在30岁时震惊了所有人。

A1 verb /juːz/

use

使用

Meaning

to employ something for a purpose; to take advantage of

Example

I use my computer for work and entertainment.

我用我的计算机来工作和娱乐。

B2 adjective /ʌnˈhɛlpfəl/

unhelpful

没有帮助的

Meaning

not providing help or support; making a situation harder rather than easier

Example

His unhelpful attitude slowed down the entire project.

他没有帮助的态度拖慢了整个项目。

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。

B2 adjective /ˌʌnkənˈtroʊld/

uncontrolled

无法控制的

Meaning

not restrained or managed; lacking control

Example

The wildfire spread in an uncontrolled manner, causing widespread damage.

野火以无法控制的方式蔓延，造成广泛破坏。

C2 adjective /ˈɜːrsaɪn/

ursine

熊似的

Meaning

Relating to or resembling a bear.

Example

The man’s ursine strength amazed everyone.

那个人熊似的力量让所有人都吃惊。

B2 adverb /ʌnˈwɪlɪŋli/

unwillingly

不情愿地

Meaning

in a way that shows reluctance or lack of desire; not willingly

Example

She unwillingly agreed to attend the meeting.

她不情愿地同意参加会议。

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。

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。

C2 adjective ˌʌn.əˈseɪ.lə.bəl

unassailable

不可攻破

Meaning

Unable to be attacked, questioned, or defeated.

Example

An unassailable position ensures dominance.

不可攻破的位置确保主导地位。

C1 adjective /ʌnˈruːli/

Unruly

不守规矩的; 乱七八糟的;

Meaning

difficult to control or manage; disorderly and disruptive

Example

The unruly crowd refused to follow the safety instructions.

那群无法控制的人群拒绝遵循安全指令。

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 /ʌnˈwel.kəm/

Unwelcome

不受欢迎的; 不想要的; 不邀请的

Meaning

not wanted or accepted; not invited or pleasant

Example

The unwelcome news ruined their vacation plans.

不受欢迎的消息破坏了他们的度假计划。

C2 noun /juːˈkeɪs/

ukase

法令

Meaning

An authoritative decree or order, especially one issued by a sovereign or government.

Example

The czar issued a ukase restricting the freedom of the press.

沙皇发布了一项限制新闻自由的法令。

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。

B2 adverb /ʌnˈfɛərli/

unfairly

不公平地

Meaning

In a manner that is not just, reasonable, or impartial

Example

He was treated unfairly by the committee.

他被委员会不公平地对待。

B2 noun /ʌnˈkaɪndnəs/

unkindness

不友善

Meaning

lack of kindness; cruel or inconsiderate behavior

Example

His unkindness hurt her feelings deeply.

他的不友善深深伤害了她的感情。

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。

C1 adjective /ʌnˈsoʊld/

unsold

未售出的

Meaning

not sold; remaining without a buyer

Example

The unsold goods were returned to the warehouse.

未售出的商品被退回仓库。

B2 adverb /ˈʌltəmətli/

ultimately

最终

Meaning

in the end, after everything else

Example

Ultimately, we decided to go ahead with the project.

最终，我们决定继续推进该项目。

A2 noun /ˈʌndərweər/

underwear

内衣

Meaning

Clothing worn beneath outer clothes, typically next to the skin.

Example

He bought new underwear for the trip.

他为旅行买了新的内衣。

C1 noun /ʌnˈfeɪθfʊlnəs/

unfaithfulness

不忠

Meaning

the quality of being disloyal or not faithful; breach of trust or fidelity

Example

His unfaithfulness led to the end of their marriage.

他的不忠导致了他们婚姻的结束。

B2 adjective /ʌnˈkɒmən/

uncommon

不常见

Meaning

rare, unusual, or remarkable

Example

It is uncommon to see snow in this region.

在这个地区看到雪是不常见的。

C2 adjective /ʌnˈmɪtɪɡeɪtɪd/

unmitigated

完全

Meaning

absolute; not lessened or moderated

Example

The meeting was an unmitigated disaster.

会议是一次完全的灾难。

C2 adjective /ʌnˈblʌʃɪŋ/

Unblushing

厚颜无耻的; 放肆的

Meaning

showing no shame or embarrassment; boldly shameless

Example

He told the unblushing lie without any hesitation.

他毫不犹豫地说了那个无耻的谎言。

B2 adjective /ʌnˈwɜːrði/

Unworthy

不配; 没有价值

Meaning

not deserving respect or attention; lacking worth or merit

Example

He felt unworthy of such praise and recognition.

他觉得自己不配得到这样的赞扬和认可。

C2 adjective /ʌnˈwiːldi/

unwieldy

笨重

Meaning

Difficult to carry or move because of its size, shape, or weight.

Example

The box was too unwieldy to carry up the stairs.

这个盒子太笨重了，无法把它提上楼梯。

A2 noun /ˈjuːnɪt/

unit

单元

Meaning

an individual thing or person regarded as a single and complete entity

Example

Each unit in the production line is carefully tested.

生产线上的每个单元都经过仔细测试。

C2 adjective /ʌnəˈpiːzd/

unappeased

不平息的

Meaning

Not satisfied or calmed; still feeling discontent or anger

Example

Despite the apology, she remained unappeased.

尽管道歉，她仍然不平息的。

C1 adjective /ˌʌnəkˈnɒlɪdʒd/

unacknowledged

未承认的

Meaning

Not recognized, admitted, or accepted; ignored or unnoticed

Example

Her contributions to the project went unacknowledged.

她对项目的贡献未被承认。

C2 adjective /ʌnˈflɛdʒd/

unfledged

未经训练的

Meaning

Inexperienced, immature, or not fully developed.

Example

The unfledged writer struggled to complete his first novel.

这个未经训练的作家难以完成他的第一本小说。