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B2 adjective /ˈrʌn daʊn/

run-down

破旧的
Meaning
in a poor condition; worn out or neglected
Example
They live in a run-down house at the edge of town.
他们住在城市边缘的一座破旧的房子里。
B2 noun /rɪˈsiː.vər/

Receiver

接收器
Meaning
a person or thing that receives something; the part of a telephone containing the earpiece and mouthpiece
Example
She picked up the receiver to answer the phone call.
她拿起听筒接听电话。
B2 noun ˌreɪ.di.oʊ.ækˈtɪv.ə.ti

radioactivity

放射性
Meaning
The emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei.
Example
Radioactivity is used in medical treatments like cancer therapy.
放射性在包括癌症治疗在内的医疗治疗中被用于治疗。
B2 noun /rɪˈfɔːr.mər/

Reformer

改革者
Meaning
a person who works to bring about positive changes in society or institutions
Example
The social reformer dedicated her life to improving education for all children.
社会改革者致力于改善所有儿童的教育。
B2 verb /reɪl/

rail

抗议
Meaning
to complain or protest strongly about something
Example
He railed against the unfair decision.
他抗议不公平的决定。
B2 noun rɪˈzɪl.i.əns

resilience

韧性
Meaning
The ability to recover quickly from difficulties; toughness.
Example
Testing the resilience of wood is crucial.
测试木材的韧性是至关重要的。
B2 verb /rɪˈvaɪv/

revive

复苏
Meaning
To bring back to life, consciousness, or activity.
Example
The paramedics managed to revive the unconscious man.
急救员成功让昏迷的男子复苏。
B2 adjective /ˈruː.tɪd/

Rooted

根深蒂固的
Meaning
deeply established; firmly fixed
Example
His beliefs are deeply rooted in tradition.
他的信念深深扎根于传统。
B2 noun /ˈreɪ.dɑːr/

Radar

雷达
Meaning
a system for detecting the presence, direction, distance of aircraft, ships by sending out radio waves
Example
The radar detected an unknown aircraft approaching the base.
雷达探测到一架未知的飞机接近基地。
B2 noun rɪˈtɛnʃən

retention

保持
Meaning
The continued possession, use, or control of something
Example
The retention of information is essential for academic success.
信息的保持对学术成功至关重要。
B2 verb /rɪˈzuːm/

resume

重新开始
Meaning
to start again after a pause or interruption
Example
We will resume the meeting after lunch.
我们将在午餐后继续会议。
B2 noun /ˈræŋkɪŋ/

ranking

排名
Meaning
a position in a list or hierarchy, especially in terms of performance or importance
Example
His ranking in the competition improved after each round.
他在比赛中的排名在每一轮之后都有所提高。
B2 noun /rɪˌlaɪəˈbɪləti/

reliability

可靠性
Meaning
the quality of being trustworthy or performing consistently well
Example
Customers value the reliability of our service.
客户重视我们服务的可靠性。
B2 noun /ˈreɪtɪŋ/

rating

评分
Meaning
an evaluation or assessment, usually numerical
Example
The movie received a high rating from critics.
这部电影得到了评论家的高评分。
B2 noun rɪˈkruːt.mənt

recruitment

招聘
Meaning
The action of finding new people to join an organization or support a cause.
Example
Recruitment strengthens the workforce.
招聘增强了劳动力。
B2 noun /ˌrɪəlɪˈzeɪʃən/

realization

实现
Meaning
the act of becoming fully aware of something as a fact
Example
Her realization of the problem helped solve the issue.
她对问题的实现帮助解决了问题。
B2 noun /rɪˈbel.jən/

Rebellion

起义
Meaning
an act of armed resistance to an established government or leader
Example
The rebellion against the king lasted for three years.
反抗国王的起义持续了三年。
B2 verb /ˌriːprəˈdjuːs/

reproduce

再生产, 繁殖
Meaning
To make a copy of something; to generate offspring.
Example
Many animals reproduce rapidly in favorable conditions.
许多动物在有利的条件下快速繁殖。
B2 noun, verb /ˈriːteɪl/

retail

零售
Meaning
the sale of goods to the public in small quantities for use or consumption rather than for resale
Example
The company specializes in the retail of clothing and accessories.
公司专注于服装和配件的零售业务。
B2 noun ˈruθləs ˌkɑmpəˈtɪʃən

ruthless competition

无情的竞争
Meaning
Fierce and merciless rivalry or contest, without pity or compassion.
Example
Ruthless competition for power leads to societal issues.
为了权力的无情竞争导致了社会问题。
B2 noun /reɪdʒ/

rage

愤怒
Meaning
intense anger or fury
Example
She shouted in a fit of rage after hearing the news.
她听到消息后在愤怒中大喊。
B2 noun /rɪˈfjuː.zəl/

Refusal

拒绝; 拒绝接受
Meaning
the act of saying no to something or not accepting something
Example
His refusal to cooperate made the project more difficult.
他拒绝合作让项目变得更难。
B2 adjective /ˈreɪʃəl/

racial

种族的
Meaning
relating to a race of people
Example
Racial equality is an important issue in many societies.
种族平等是许多社会中的一个重要问题。
B2 noun /rɪˈhɜːr.səl/

Rehearsal

彩排; 演出排练
Meaning
a practice performance of a play, concert, or other work for later public performance
Example
The final rehearsal before opening night went perfectly.
开幕夜前的最后一次彩排非常完美。
B2 noun ˌrɛvəˈluːʃən

revolution

革命
Meaning
A forcible overthrow of a government or social order, in favor of a new system.
Example
The story is set during the French Revolution.
故事发生在法国大革命期间。
B2 noun /ˌriːprəˈdʌkʃən/

reproduction

繁殖, 再生产
Meaning
The process of producing offspring; the act of copying or duplicating.
Example
The textbook included a detailed diagram of human reproduction.
课本中包含了人类繁殖的详细图表。
B2 adjective /rɪˈspek.tɪv/

Respective

各自的; 相关的
Meaning
belonging to each individual; particular to each
Example
The students returned to their respective classrooms after lunch.
学生们在午餐后回到了各自的教室。
B2 verb /ˌriːjuˈnaɪt/

reunite

重聚
Meaning
to bring together again after separation
Example
The family was reunited after many years.
这个家庭在许多年后重新团聚。
B2 noun, verb /rɪˈzɔːrt/

resort

度假村 / 最后的选择
Meaning
A place for rest or recreation; to turn to something for help or solution.
Example
They stayed at a beach resort during their vacation.
他们在度假期间住在海滩度假村。
B2 noun /rɪm/

rim

边缘
Meaning
the outer edge or border of a circular object
Example
The coffee cup had a chip on its rim.
咖啡杯的边缘有个裂痕。
B2 verb /ˈrendər/

render

提供
Meaning
to provide or give; to make or cause to become
Example
The artist renders the scene beautifully.
艺术家美丽地渲染了场景。
B2 noun /ˈrɪb.ən/

ribbon

缎带
Meaning
a long, narrow strip of fabric used for tying or decoration
Example
She tied her hair with a red ribbon.
她用一条红色的缎带绑住了她的头发。
B2 noun /ˈrʊki/

rookie

菜鸟
Meaning
a person who is new to an activity or organization; a beginner
Example
The rookie policeman made a few mistakes on his first day.
新警察在第一天犯了几次错误。
B2 noun /rɪˈfreʃ.mənt/

Refreshment

茶点
Meaning
food and drink that is served as a light meal; something that refreshes
Example
We served light refreshments after the meeting.
我们在会议后提供了轻便的茶点。
B2 noun rɪsk ˈfæktər

risk factor

风险因素
Meaning
Something that increases the likelihood of developing a disease or condition
Example
Water pollution is a significant risk factor for health.
水污染是健康的一个重要风险因素。
B2 noun /ˌriː.ɪnˈfɔːrs.mənt/

reinforcement

强化
Meaning
Strengthening or supporting something, especially behavior or learning.
Example
Positive reinforcement helps in learning.
积极的强化有助于学习。
B2 noun /ˌriː.əˈʃʊr.əns/

Reassurance

安慰
Meaning
comfort or confidence given to someone to remove their fears or doubts
Example
She needed reassurance that everything would be okay.
她需要得到安慰，以确认一切都会好起来。
B2 adverb /rɪˈlʌk.tənt.li/

Reluctantly

不情愿地
Meaning
in an unwilling manner; with hesitation or resistance
Example
She reluctantly agreed to help with the project.
她不情愿地同意帮助这个项目。
B2 noun /ˈrɛnəˌsɑːns/

renaissance

文艺复兴
Meaning
a revival of art, culture, or learning; a period of renewed interest and growth
Example
The city experienced a cultural renaissance during the 1990s.
这座城市在1990年代经历了文化复兴。
B2 verb /rɪˈfreɪn/

refrain

避免
Meaning
To hold oneself back from doing something.
Example
Please refrain from smoking in this area.
请勿在此区域内吸烟。
B2 noun/adjective /rɪˈpʌblɪkən/

republican

共和党人
Meaning
a member or supporter of a republican political party or system
Example
The republican candidate won the election.
共和党候选人赢得了选举。
B2 noun /ˈroʊ.lɪŋ pɪn/

Rolling pin

擀面杖
Meaning
a cylindrical tool used for rolling out dough or pastry
Example
Roll the dough flat with a rolling pin.
用擀面杖把面团擀平。
B2 adverb /rɪˈmɑːrkəbli/

remarkably

引人注目地
Meaning
in a way that is worthy of attention or notice; surprisingly
Example
She did remarkably well in the competition.
她在比赛中表现得引人注目。
B2 noun /ˌreɡ.jʊˈlær.ɪ.ti/

Regularity

规律性
Meaning
the quality of being regular; occurring at fixed intervals or in a consistent pattern
Example
The regularity of his exercise routine helped him stay healthy.
他锻炼的规律性帮助他保持健康。
B2 verb /rɪˈteɪn/

retain

保持
Meaning
to keep possession of something
Example
The company decided to retain its experienced employees.
公司决定保留其经验丰富的员工。
B2 verb rɪˈstɔːr

restore

恢复
Meaning
To bring back to a former or original state; to reinstate.
Example
Restoring the tradition of student politics is necessary.
恢复学生政治传统是必要的。
B2 noun /ˈreɪn.dʒər/

ranger

巡护员
Meaning
A person responsible for protecting and managing forests, parks, or natural areas.
Example
The park ranger guided the tourists through the forest trail.
公园巡护员带领游客走过森林小道。
B2 verb /rɪˈkruːt/

recruit

招募
Meaning
to enlist or hire people for a job, service, or membership
Example
The company is trying to recruit more software engineers.
这家公司正在努力招募更多的软件工程师。
B2 adjective /rɪˈzɜːrvd/

Reserved

内向的; 保守的
Meaning
slow to reveal emotion or opinions; restrained in manner
Example
She is quite reserved and doesn't talk much in meetings.
她相当内向，在会议中很少讲话。
B2 noun /reɪˈʒiːm/

regime

政权
Meaning
a system or form of government, often authoritarian
Example
The military regime controlled the country for decades.
军事政权控制了这个国家几十年。
B2 verb /ˌriː.kənˈsɪd.ər/

reconsider

重新考虑
Meaning
to think about something again, especially to change a decision or opinion
Example
She decided to reconsider her decision about moving abroad.
她决定重新考虑她关于移居国外的决定。
B2 noun /rɪˈvaɪ.vəl/

Revival

复兴
Meaning
an improvement in the condition or strength of something; renewed interest in or attention to something
Example
There has been a revival of interest in traditional crafts.
传统手工艺的兴趣得到了复兴。
B2 noun /ˈruːlɪŋ/

ruling

裁决
Meaning
an official decision made by a judge or authority.
Example
The court’s ruling favored the defendant.
法院的裁决对被告有利。
B2 noun /rɪˈmuː.vəl/

Removal

移除; 去除; 解雇;
Meaning
the action of taking something away or eliminating it; dismissal from office
Example
The removal of the old furniture took all day.
移除旧家具花了整整一天。
B2 adjective /rɪˈspɒn.sɪv/

Responsive

响应的
Meaning
reacting quickly and positively; readily reacting to suggestions or changes
Example
The website is very responsive and loads quickly on all devices.
这个网站非常响应，能快速加载所有设备。
B2 adverb /rɪˈɡɑrdləs/

regardless

不管
Meaning
without paying attention to the current situation or condition
Example
She will go to the party regardless of the weather.
她将去派对，不管天气如何。
B2 verb /rɪˈzaɪd/

reside

居住
Meaning
to live or dwell in a particular place
Example
They reside in a large house near the river.
他们住在河边的一座大房子里。
B2 noun /rɒd/

rod

细长的棒子，尤其是金属或木制的
Meaning
a thin straight bar, especially of metal or wood
Example
He used an iron rod to support the structure.
他用铁棒支撑结构。
B2 adjective /ˈruː.mi/

Roomy

宽敞的; 有很多空间的
Meaning
spacious; having a lot of room
Example
The apartment is very roomy with spacious bedrooms.
公寓非常宽敞，拥有宽大的卧室。
B2 noun /ˈrɛfjuːdʒ/

refuge

避难所
Meaning
a place that provides shelter or protection from danger or distress
Example
The villagers took refuge in the temple during the storm.
村民们在风暴期间躲进了寺庙避难。
B2 verb /rɪˈdʒɔɪs/

rejoice

欢欣
Meaning
to feel or show great joy; to celebrate
Example
The family rejoices at the good news.
这个家庭因好消息而欢欣鼓舞。
B2 verb /ˈruːɪn/

ruin

毁灭
Meaning
to destroy or damage beyond repair; to spoil completely
Example
Heavy rain could ruin our picnic plans.
大雨可能会毁掉我们的野餐计划。
B2 adverb /ˈraɪtli/

Rightly

正确地; 适当地; 公正地
Meaning
correctly; properly; justly
Example
She rightly pointed out the mistakes in the report.
她正确地指出了报告中的错误。
B2 verb /rɪˈnuː/

renew

Meaning
to make something new again or extend its period of validity
Example
I need to renew my passport before traveling.
B2 noun /ˈriːteɪlər/

retailer

零售商
Meaning
a person or business that sells goods to consumers rather than to other businesses
Example
The retailer offers discounts on electronic products.
零售商提供电子产品的折扣。
B2 adjective /rɪˈlaɪ.ənt/

reliant

依赖的
Meaning
depending on someone or something for support
Example
The country is too reliant on imported goods.
这个国家过于依赖进口商品。
B2 adjective /ˌrez.ɪˈden.ʃəl/

residential

住宅
Meaning
Designed for people to live in.
Example
The institution was fully residential.
该机构是完全住宅性质的。
B2 noun /rɪˈvendʒ/

Revenge

复仇
Meaning
the action of inflicting hurt or harm on someone for an injury or wrong suffered at their hands
Example
She sought revenge against those who betrayed her trust.
她寻求复仇，针对那些背叛她信任的人。
B2 noun /ˈraɪvəlri/

Rivalry

竞争; 对抗
Meaning
competition for the same objective or for superiority in the same field; the state of being rivals
Example
The rivalry between the two teams made the match exciting.
两个队伍之间的竞争使比赛变得非常刺激。
B2 noun /ˈriːzənɪŋ/

reasoning

推理
Meaning
the process of thinking about something in a logical way in order to form a conclusion or judgment
Example
Her reasoning for leaving was clear and logical.
她离开的推理是清晰和合逻辑的。
B2 verb /ˈrʌm.bəl/

rumble

幸福
Meaning
to make a continuous deep, resonant sound
Example
Thunder rumbled in the distance.
当她收到奖项时，她无法隐藏自己的幸福。
B2 noun /ˌrɛfəˈriː/

referee

裁判
Meaning
a person who oversees a game or match to ensure the rules are followed
Example
The referee stopped the game after a foul.
裁判在犯规后暂停了比赛。
B2 noun rɪˈzentmənt

resentment

怨恨
Meaning
Bitter indignation at having been treated unfairly.
Example
Resentment grew among the students.
学生们之间的怨恨加剧了。
B2 verb /rɪˈɡeɪn/

regain

恢复
Meaning
to get back something that was lost; to recover
Example
He regains his strength after the illness.
他在生病后恢复了力量。
B2 adjective /ˈrɪɡ.ər.əs/

rigorous

严格
Meaning
Extremely thorough and demanding in analysis or practice.
Example
A rigorous study plan helps students achieve better results.
严格的学习计划帮助学生取得更好的成绩。
B2 adverb /ˈred.ɪ.li/

Readily

乐意地; 容易地; 毫不犹豫
Meaning
willingly; easily; without hesitation
Example
She readily agreed to help with the project.
她乐意地同意帮助项目。
B2 noun /ˈreɪ.zɪnz/

Raisins

葡萄干
Meaning
dried grapes, often used in cooking and baking
Example
She added raisins to the oatmeal cookies for extra sweetness.
她在燕麦饼干中加入了葡萄干，以增加甜味。
B2 noun /ˌrɛvəˈleɪʃən/

revelation

启示
Meaning
A surprising and previously unknown fact, especially one made known in a dramatic way.
Example
The book was full of shocking revelations about the politician.
这本书充满了对政治家的震惊启示。
B2 verb /ˈræl.i/

rally

Meaning
to come together for a common purpose or to recover strength or spirit
Example
The team rallied after halftime and won the match.
B2 verb /rɪˈzɜːv/

reserve

预定
Meaning
to keep something for future use; to book in advance
Example
I want to reserve a table for dinner.
我想为晚餐预订一张桌子。
B2 noun /ˈreɪ.zər/

Razor

剃须刀
Meaning
a sharp-edged instrument used for shaving hair from the skin
Example
He shaved his beard with a sharp razor.
他用一把锋利的剃须刀刮胡子。
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 /ræɡ/

Rag

旧布；用来清洁的破旧衣物
Meaning
a piece of old cloth used for cleaning; worn-out clothing
Example
She used an old rag to clean the dusty table.
她用一块旧布擦拭了满是灰尘的桌子。
B2 noun /ˈreɪʃoʊ/

ratio

比例
Meaning
a relationship between two numbers showing how many times the first number contains the second
Example
The ratio of boys to girls in the class is 2:1.
班级中男生和女生的比例是2:1。
B2 adjective /rɪˈɡret.ə.bəl/

Regrettable

令人遗憾的; 不幸的; 可惜的
Meaning
causing or deserving regret; unfortunate; deplorable
Example
It is regrettable that so many talented people left the company.
很遗憾这么多有才华的人离开了公司。
B2 noun /ˈrest.ləs.nəs/

Restlessness

不安
Meaning
the inability to rest or relax as a result of anxiety or boredom
Example
His restlessness during the long meeting was obvious to everyone.
在长时间的会议中，他的不安对每个人都很明显。
B2 noun /ˈrɪk.ʃɔː/

Rickshaw

人力车
Meaning
a light two-wheeled passenger vehicle drawn by one or more people
Example
We took a rickshaw to reach the busy marketplace.
我们乘坐人力车前往繁忙的市场。
B2 noun /ˈruːdnəs/

Rudeness

粗鲁
Meaning
the quality of being impolite, discourteous, or offensive in behavior or speech
Example
His rudeness shocked everyone at the dinner party.
他的粗鲁在晚宴上震惊了所有人。
B2 adjective /ˈrɪdən/

ridden

充斥
Meaning
Full of or dominated by something unpleasant.
Example
The country was ridden with corruption.
这个国家充斥着腐败。
B2 noun /rɪˈzembləns/

Resemblance

相似
Meaning
the state of being alike or similar; similarity in appearance or character
Example
There's a strong resemblance between the two sisters.
这两个姐妹之间有着强烈的相似性。
B2 noun /'ræd.ɪʃ/

Radish

小萝卜
Meaning
a small pungent edible root vegetable with white or red skin
Example
The farmer harvested fresh radishes from the garden.
农民从花园里收获了新鲜的小萝卜。
B2 adjective ˌrev.əˈluː.ʃən.ər.i

revolutionary

革命性的
Meaning
Involving or causing a complete or dramatic change.
Example
Revolutionary ideas are reshaping the industry.
革命性的思想正在改变这个行业。
B2 adjective /ˈrændəm/

Random

随机
Meaning
without pattern or predetermined order; happening by chance
Example
She selected a random book from the library shelf.
她从书架上挑选了一本随机的书。
B2 adjective /rɪˈfaɪnd/

Refined

精致的; 纯净的
Meaning
elegant and cultured in appearance, manner, or taste; purified
Example
She has very refined taste in art and music.
她对艺术和音乐有非常精致的品味。
B2 verb /rɪˈstreɪn/

restrain

抑制
Meaning
to hold back or control; to limit or restrict
Example
Please restrain your dog.
请控制你的狗。
B2 verb /riːˈɔːrɡənaɪz/

reorganize

重新组织
Meaning
to arrange something again in a different way for greater efficiency or order
Example
The manager decided to reorganize the team structure.
经理决定重新组织团队结构。
B2 noun /raɪˈnɒs.ər.əs/

Rhinoceros

犀牛
Meaning
a large, heavy animal with thick skin and one or two horns on its nose
Example
The rhinoceros charged through the grassland.
犀牛冲过草原。
B2 noun /rɪˈstrɪk.ʃən/

Restriction

限制; 限定; 控制
Meaning
a limiting condition or measure; the limitation or control of someone or something
Example
There are strict restrictions on smoking in public places.
在公共场所吸烟有严格的限制。
B2 noun /rɪˈstreɪnt/

Restraint

克制; 自我控制
Meaning
the action of keeping someone or something under control; self-control
Example
She showed great restraint in not responding to the criticism.
她在不回应批评时表现出极大的克制。
B2 verb /ˈraɪpən/

ripen

幸福
Meaning
to become or make something ready to eat or fully developed
Example
The bananas ripened quickly in the warm weather.
当她收到奖项时，她无法隐藏自己的幸福。
B2 verb /rɪˈzɛmbəl/

resemble

像
Meaning
to look like or be similar to something or someone
Example
She resembles her mother in both appearance and mannerisms.
她在外貌和举止上都像她母亲。
B2 verb /rɪˈvɜːs/

reverse

反转
Meaning
to change something to the opposite direction, position, or result
Example
She quickly reversed the car out of the driveway.
她迅速把车从车道上倒了出来。
B2 adjective ˌriːprəˈdʌktɪv

reproductive

繁殖的
Meaning
Relating to the reproduction of offspring.
Example
The reproductive cycle of pests can cause rapid infestations.
害虫的繁殖周期可能导致快速的感染。
B2 verb /rɪˈvoʊlt/

revolt

反抗
Meaning
to rebel against authority; to feel disgust
Example
The people revolted against the corrupt government.
人民反抗腐败的政府。
B2 adjective /ˈrʌs.ti/

Rusty

生锈的; 不熟练的; 由于缺乏近期练习而受损
Meaning
affected by rust; out of practice; impaired by lack of recent practice
Example
My piano skills are rusty after not playing for years.
我的钢琴技巧生锈了，因为多年没有练习。
B2 noun /ˈreɪsɪzəm/

racism

种族主义
Meaning
the belief that some races are superior to others, leading to unfair treatment or prejudice
Example
The organization works to eliminate racism in all forms.
该组织致力于消除所有形式的种族主义。
B2 noun /ˈrɛlɪvəns/

relevance

相关性
Meaning
the quality or state of being closely connected or appropriate
Example
The relevance of the information was clear to everyone.
信息的相关性对每个人来说都很清楚。
B2 adjective rɪˈnaʊnd

renowned

著名
Meaning
Known or talked about by many people; famous.
Example
The renowned scientist led the reform panel.
著名的科学家领导了改革小组。
B2 adjective /ˈrɪtʃ.u.əl/

Ritual

仪式
Meaning
relating to religious or ceremonial practices
Example
The wedding ceremony included many traditional ritual elements.
婚礼仪式包括许多传统的仪式元素。
B2 verb /rɪp/

rip

撕裂
Meaning
to tear something quickly or violently
Example
He accidentally ripped his shirt on the fence.
他不小心在篱笆上撕破了衬衫。
B2 noun ˈrɛvənuː

revenue

收入
Meaning
Income, especially when of a company or organization.
Example
The company's revenue grew by 10% this year.
公司的收入今年增长了10%。
B2 verb /rɪˈtriːv/

retrieve

找回
Meaning
to get something back that was lost or taken; to recover
Example
She managed to retrieve her lost phone from the taxi.
她成功地从出租车中找回了她丢失的手机。
B2 verb /reɪd/

raid

突袭
Meaning
to attack suddenly; to search and seize
Example
Police raid the illegal gambling house.
警方突袭非法赌博屋。
B2 noun /rɪb/

Rib

肋骨
Meaning
one of the curved bones that protect the chest and lungs
Example
He broke his rib in the accident.
他在事故中断了一根肋骨。
B2 adjective /ˈruːθ.ləs/

Ruthless

无情的; 残忍的; 毫无怜悯的
Meaning
showing no pity or compassion; cruel; merciless
Example
The ruthless dictator showed no mercy to his enemies.
那个冷酷的独裁者对他的敌人毫不留情。
B2 noun /ˈrækɪt/

racket

球拍 / 喧闹
Meaning
A piece of equipment used to hit the ball in sports like tennis or badminton; also a loud noise or an illegal scheme.
Example
He bought a new tennis racket for the match.
他为比赛买了一把新网球拍。
B2 noun /ˈrɛlɪvənsi/

relevancy

相关性
Meaning
the quality of being closely connected or appropriate
Example
The professor questioned the relevancy of the example to the topic.
教授质疑了这个例子与主题的相关性。
B2 noun rɪˈpʌb.lɪk

republic

共和国
Meaning
A state in which supreme power is held by the people and their elected representatives, with an elected or nominated president rather than a monarch.
Example
A republic is governed by representatives of the people.
共和国由人民的代表治理。
B2 noun /ˈruːmər/

Rumour

流言; 八卦; 新闻
Meaning
a currently circulating story or report of uncertain or doubtful truth; gossip
Example
There's a rumour that the company will close next month.
有传言说公司将在下个月关闭。
B2 noun, verb, adjective /ræŋk/

rank

职级
Meaning
A position in a hierarchy; to place in order according to importance or quality.
Example
She quickly rose to a senior rank in the company.
她迅速晋升为公司中的高级职位。
B2 noun ˌrev.əˈluː.ʃənz

revolutions

革命
Meaning
Dramatic and wide-reaching changes in political, social, or economic systems, often involving the overthrow of a government or social order.
Example
Revolutions often lead to significant societal changes.
革命常常导致社会变革的重要变化。