Unit 21-U开头词汇

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The building’s design is widely considered ugly and outdated.

这座建筑的设计被普遍认为丑陋且过时。

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Stress and poor diet can contribute to stomach ulcers.

压力和不良饮食可能导致胃溃疡。

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Her ultimate goal is to become a neurosurgeon.

她的终极目标是成为一名神经外科医生。

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Ultimately, the decision rests with the board of directors.

最终，决定权在董事会手中。

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ultimo

ultimo

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Dolphins use ultrasonic clicks for echolocation.

海豚利用超声波咔嗒声进行回声定位。

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Ultraviolet radiation can damage skin cells.

紫外线辐射会损伤皮肤细胞。

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She opened her umbrella as the rain began to fall.

雨开始下时，她撑开了伞。

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He was unable to attend the meeting due to illness.

他因生病无法参加会议。

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Such discrimination is completely unacceptable in modern society.

此类歧视在现代社会是完全不可接受的。

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The hotel staff were unaccommodating when we requested a late check-out.

当我们要求延迟退房时，酒店员工很不近人情。

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Housing in central London has become unaffordable for most young professionals.

伦敦市中心的住房对大多数年轻专业人士而言已难以负担。

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The jury reached a unanimous verdict after three hours of deliberation.

陪审团经过三小时审议后达成一致同意的裁决。

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Delays are an unavoidable part of large-scale infrastructure projects.

延误是大型基础设施项目中不可避免的一部分。

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The pain became unbearable, so she went straight to the emergency room.

疼痛变得难以忍受，于是她直接去了急诊室。

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It remains uncertain whether the policy will be implemented next year.

该政策明年是否会实施仍不确定。

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Economic uncertainty has led many investors to adopt a cautious approach.

经济不确定性使许多投资者采取了谨慎态度。

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My uncle is a retired professor of environmental science.

我叔叔是一位退休的环境科学教授。

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The chair was so hard and narrow that I felt uncomfortable throughout the lecture.

这把椅子又硬又窄，整场讲座我都感到不舒服。

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It is uncommon for students to complete their PhD before turning twenty-five.

学生在二十五岁前完成博士学位是罕见的。

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She loves her children unconditionally, regardless of their choices.

她无条件地爱着自己的孩子，无论他们做出何种选择。

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He collapsed and lay unconscious on the pavement for several minutes.

他晕倒后在人行道上无意识地躺了几分钟。

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Journalists worked for months to uncover evidence of corporate fraud.

记者们花了数月时间揭示企业欺诈的证据。

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The agreement is legally binding under international law.

该协议依据国际法具有法律约束力。

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Never underestimate the complexity of this engineering challenge.

切勿低估这一工程挑战的复杂性。

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All candidates must undergo rigorous background checks before appointment.

所有候选人必须在任命前经历严格的背景审查。

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She is an undergraduate majoring in cognitive psychology at Oxford.

她是牛津大学认知心理学专业的本科生。

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They took the underground from King’s Cross to Covent Garden.

他们乘地铁从国王十字车站前往科文特花园。

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The report underlines the urgent need for climate adaptation funding.

该报告强调了气候适应资金的迫切需求。

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Stress is often the underlying cause of chronic insomnia.

压力往往是慢性失眠的潜在原因。

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undermentioned

下述的

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His constant criticism undermined her confidence.

他持续不断的批评破坏了她的信心。

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There's a layer of ice underneath the snow.

积雪之下有一层冰。

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undersigned

签署人

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I don’t fully understand how the algorithm works.

我并不完全理解这个算法是如何运行的。

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Mutual understanding is essential for effective teamwork.

相互理解对于高效团队合作至关重要。

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She will undertake the leadership of this project next month.

她将于下月承担该项目的领导工作

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Launching a startup is a risky but rewarding undertaking.

创办一家初创公司是一项充满风险却富有回报的事业。

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He packed three sets of clean underwear for the trip.

他为这次旅行打包了三套干净的内衣。

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The underwriter assessed the risk before approving the loan.

承销商在批准贷款前评估了相关风险。

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The court’s ruling will undo years of policy progress.

法院的裁决将撤销多年来的政策进展。

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She is undoubtedly the most qualified candidate for the role.

她毫无疑问是该职位最合格的候选人。

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The media coverage caused undue public alarm.

媒体报道引发了过度的公众恐慌。

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Don’t unduly stress over minor grammatical errors.

不要过度担忧细小的语法错误。

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He felt uneasy about the sudden change in plans.

他对计划的突然变更感到不安。

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Rising unemloyment has triggered widespread economic concern.

失业率上升已引发广泛的经济担忧。

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An unexpected power outage disrupted the entire presentation.

一次出乎意料的停电打乱了整场演示。

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It’s unfair to judge someone based solely on their appearance.

仅凭外貌评判他人是不公平的。

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The building was declared unfit for human habitation.

该建筑被认定为不适合人类居住。

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Events began to unfold rapidly after the announcement.

公告发布后，事态迅速展开。

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It’s unfortunate that the conference had to be cancelled.

很不幸，会议不得不取消。

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Unfortunately, the data set contained critical errors.

不幸的是，该数据集包含关键性错误。

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Many employees remain unhappy with the new remote work policy.

许多员工对新的远程办公政策仍不开心。

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All staff must wear the official company uniform at work.

所有员工上班时必须穿着公司正式制服。

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The results were uniformly positive across all test groups.

所有测试组的结果均一致呈积极态势。

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Students appeared uninterested in the outdated teaching materials.

学生们似乎对过时的教学材料不感兴趣。

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The European Union is a political and economic union.

欧盟是一个政治与经济联盟。

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Each snowflake has a unique crystalline structure.

每片雪花都有独特的晶体结构。

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The apartment complex consists of thirty residential units.

该公寓楼由三十个住宅单位组成。

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We must unite to address the global climate crisis.

我们必须团结起来应对全球气候危机。

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The United Nations Charter calls for all nations to remain united in peace.

《联合国宪章》呼吁所有国家在和平中保持联合。

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London is the capital city of the United Kingdom.

伦敦是英国的首都。

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The United Nations promotes international cooperation on human rights.

联合国促进人权领域的国际合作。

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The United States is home to over 330 million people.

美国人口超过3.3亿。

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National unity is essential during times of crisis.

国家团结在危机时期至关重要。

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English has become a universal language in international business.

英语已成为国际商务中的通用语言。

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This principle is universally accepted among ethical philosophers.

这一原则被伦理哲学家普遍接受。

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Scientists estimate the observable universe is nearly 93 billion light-years wide.

科学家估计可观测宇宙的直径近930亿光年。

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She earned her doctorate from a prestigious research university.

她从一所著名的研究型大学获得了博士学位。

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Laws that discriminate based on gender are widely regarded as unjust.

基于性别的歧视性法律被普遍视为不公正的。

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It was unkind of him to mock her presentation in front of colleagues.

他在同事面前嘲笑她的报告，这种行为很不友善。

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The origin of the artifact remains completely unknown to archaeologists.

这件文物的起源对考古学家而言仍是完全未知的。

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It is unlawful to drive without a valid license in most countries.

在大多数国家，无有效驾照驾车是非法的。

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You won’t pass the exam unless you revise consistently.

除非你持续复习，否则你无法通过考试。

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Unlike his brother, she excels in analytical thinking.

她不像她哥哥，擅长分析性思维。

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It is highly unlikely that the project will finish ahead of schedule.

该项目提前完工的可能性极低。

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The subscription offers unlimited access to all online courses.

该订阅服务提供所有在线课程的无限访问权限。

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Workers carefully unload containers from the cargo ship.

工人们小心地从货轮上卸载集装箱。

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A strong password helps unlock secure digital accounts safely.

强密码有助于安全登录受保护的数字账户。

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He felt unlucky after missing the train by just ten seconds.

他因晚十秒而错过火车，感到倒霉。

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Carrying five heavy bags is unnecessary when a trolley is available.

当有手推车可用时，提五个重包是不必要的。

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The rare manuscript remains unobtainable for most scholars.

这本珍稀手稿对大多数学者而言仍难以获得。

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She’s been working unpaid for three months during her internship.

实习期间，她已无偿工作三个月。

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The smell of rotten food made the room unpleasant.

腐烂食物的气味令人不快。

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The pandemic triggered an unprecedented global economic slowdown.

这场疫情引发了前所未有的全球经济放缓。

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His demand for a full refund after six months is completely unreasonable.

他在六个月后要求全额退款是完全不合理的。

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Due to poor design, the product quickly became unsalable in all major markets.

由于设计不佳，该产品很快在所有主要市场都滞销了。

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The committee found the safety report deeply unsatisfactory and demanded revisions.

委员会认为这份安全报告不尽如人意，要求修改。

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Political instability arises when governments become economically and socially unstable.

当政府在经济和社会层面变得不稳定时，政治动荡便随之产生。

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This software is unsuitable for use in high-security financial institutions.

该软件不适合用于高安全级别的金融机构。

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Please untie the knot before attempting to open the package.

请先解开绳结，再尝试打开包裹。

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We won’t know the final results until next Friday afternoon.

我们直到下周五下午才能知道最终结果。

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After the flood, the basement was left completely unusable for over a year.

洪水过后，地下室整整一年都无法使用。

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It’s unusual for him to arrive late—he’s always punctual.

他迟到很不寻常——他向来守时。

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Her dismissal was based on unwarranted assumptions about her performance.

她的解雇是基于对其表现的无根据推测。

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His sudden criticism was unwelcome during the team’s already tense meeting.

在他团队本已紧张的会议中，他突如其来的批评很不受欢迎。

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Many employees remain unwilling to return to full-time office work.

许多员工仍不情愿回归全职办公室工作。

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The proposed tax reform was declared unworkable by independent fiscal analysts.

独立财政分析师宣布所提议的税制改革不可行。

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Prices have gone up sharply due to supply chain disruptions.

由于供应链中断，物价已大幅上涨。

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upcreep

缓慢上升

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Courts must uphold the rule of law regardless of political pressure.

法院必须坚持法治，不受政治压力影响。

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Upon receiving the official notification, she immediately filed her appeal.

一收到正式通知，她立即提出了上诉。

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Students in the upper secondary level must pass national exams to graduate.

高中阶段的学生必须通过国家考试才能毕业。

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He’s widely respected as an upright judge who never compromises on ethics.

他作为一位从不违背职业道德的正直法官而广受尊敬。

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The policy announcement sparked immediate uproar among environmental activists.

这项政策公告立即引发了环保活动人士的骚动。

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She felt deeply upset after learning her application had been rejected.

得知申请被拒后，她感到非常沮丧。

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The main upside of remote work is flexibility.

远程工作的主要优势是灵活性。

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The toddler turned the picture upside-down and giggled.

那个学步儿童把画颠倒过来，咯咯地笑了。

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Our bedrooms are all located upstairs.

我们的卧室全都在楼上。

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She keeps her knowledge up-to-date through regular professional development.

她通过定期的专业发展来保持知识的最新。

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There has been an upward trend in global temperatures over the past decade.

过去十年全球气温呈上升趋势。

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Uranium is a radioactive element used primarily as fuel in nuclear reactors.

铀是一种放射性元素，主要用作核反应堆的燃料。

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Urban populations continue to grow faster than rural ones worldwide.

全球城市人口的增长速度继续快于农村人口。

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Environmental groups urge governments to adopt stricter emissions standards.

环保组织敦促各国政府采取更严格的排放标准。

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This matter requires urgent attention from senior management.

此事需要高级管理层的紧急关注。

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We must address climate change urgently to avoid irreversible damage.

我们必须紧急应对气候变化，以避免不可逆转的损害。

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The committee asked us to submit our proposals by Friday.

委员会要求我们在周五前提交提案。

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The dictionary provides clear examples of word usage in academic contexts.

这本词典提供了该词在学术语境中的清晰用法示例。

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Students should learn how to use evidence effectively in their essays.

学生应学会如何在文章中有效使用证据。

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A bilingual dictionary is extremely useful for advanced language learners.

双语词典对高级语言学习者极为有用。

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The usefulness of this statistical method depends on the quality of the input data.

这种统计方法的实用性取决于输入数据的质量。

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Without proper training, even the most advanced software becomes useless.

如果没有适当培训，再先进的软件也会变得无用。

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The app’s interface is designed with the end user in mind.

该应用程序的界面设计以终端用户为中心。

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It’s unusual for temperatures to drop below freezing in this coastal region.

在这个沿海地区，气温通常不会降至冰点以下。

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She usually commutes by bicycle unless it’s raining heavily.

她通常骑自行车通勤，除非下大雨。

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Stainless steel utensils are durable, hygienic, and widely used in professional kitchens.

不锈钢餐具耐用、卫生，被广泛用于专业厨房。

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The utility of renewable energy lies in its sustainability and low environmental impact.

可再生能源的效用在于其可持续性和低环境影响。

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Efficient water utilization is critical in arid agricultural regions.

在干旱农业地区，水资源的高效利用至关重要。

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Modern hospitals utilize AI algorithms to assist in medical diagnosis.

现代医院利用人工智能算法辅助医学诊断。

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We treat patient confidentiality with the utmost seriousness.

我们以极度严肃的态度对待患者保密。

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His reaction was one of utter disbelief when he heard the news.

他听到这个消息时，表现出完全的难以置信。

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His first utterance was a simple 'hello' to the audience.

他的第一句话是对观众说的一声“你好”