recrudesce
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C2 verb /ˌriːkruːˈdɛs/

recrudesce

复发
Meaning
to break out or appear again after a period of dormancy or decline
Example
After months of calm, violence recrudesced in the region.
经过几个月的平静后，暴力在该地区再次爆发。
B1 noun /roʊˈmæns/

Romance

浪漫
Meaning
a feeling of excitement and mystery associated with love; a love affair or relationship
Example
Their romance began when they met at the university library.
他们的罗曼史始于他们在大学图书馆相遇时。
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 adjective /ˈraʊ.di/

Rowdy

吵闹的; 无序的; 破坏性的
Meaning
disorderly; unruly; noisy and disruptive
Example
The rowdy children were making too much noise.
吵闹的孩子们制造了太多噪音。
B2 noun /ˈraɪdər/

rider

骑手
Meaning
A person who rides a horse, bicycle, motorcycle, or other vehicle.
Example
The rider fell off the horse.
骑手从马背上摔了下来。
C1 noun /ˌræʃəˈnæl/

rationale

基本原因
Meaning
the underlying reason or explanation for something
Example
The rationale behind his decision was clearly explained.
他决定背后的理由被清楚地解释了。
C2 noun /ˈræpsədi/

rhapsody

激昂的歌曲/赞美
Meaning
an expression of great enthusiasm or an epic musical composition
Example
The singer’s performance was a rhapsody of emotions.
歌手的表演是一场情感的狂想曲。
C1 verb /ˈruː.mɪ.neɪt/

ruminate

深思, 反刍
Meaning
to think deeply about something; to chew cud (for animals)
Example
She sat alone to ruminate on her decision.
她坐在一起，深思自己的决定。
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。
A2 verb /riːtʃ/

reach

到达
Meaning
to arrive at a destination; to extend one's arm to touch something
Example
We will reach the station in ten minutes.
我们将在十分钟内到达车站。
C2 noun /ˈrɛvəlri/

revelry

庆典
Meaning
Lively and noisy festivities, especially involving drinking and dancing.
Example
The sound of revelry could be heard throughout the night.
整晚都能听到庆典的声音。
C1 noun/verb /ˈræfəl/

raffle

销售彩票
Meaning
A means of raising money by selling numbered tickets, one or more of which are drawn at random for a prize; to sell something in such a lottery.
Example
The charity decided to raffle a bicycle to raise funds.
慈善机构决定通过抽奖出售自行车来筹集资金。
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 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。
A2 verb riˈsaɪklɪŋ

recycling

回收
Meaning
The process of converting waste materials into new materials and objects to prevent waste.
Example
Recycling plastic helps in reducing waste.
回收塑料有助于减少废物。
C2 adjective /ˈrɛɡnənt/

regnant

在位
Meaning
Reigning; currently holding power, authority, or dominance.
Example
The regnant queen introduced several reforms during her reign.
在位的女王在她的统治期间进行了几项改革。
C1 verb /rɪˈdʒɛnəreɪt/

regenerate

再生
Meaning
to grow or produce again; to renew or restore
Example
The lizard can regenerate its lost tail.
蜥蜴可以再生它失去的尾巴。
C2 verb /rɔɪl/

roil

搅动
Meaning
to make a liquid muddy or disturbed; to cause agitation or disorder
Example
The constant protests roiled the city streets.
持续的抗议活动搅动了城市的街道。
B1 adjective /rɪˈleɪ.tɪd/

Related

相关的; 有联系的
Meaning
connected; associated; having a connection or relationship
Example
These two problems are closely related to each other.
这两个问题彼此紧密相关。
B1 noun /rɪˈsep.ʃən/

Reception

接待; 欢迎; 活动;
Meaning
the action of receiving something or someone; a formal social occasion held to welcome someone
Example
The wedding reception was held at a beautiful hotel.
婚礼接待在一家漂亮的酒店举行。
B2 verb /ˌriːkriˈeɪt/

recreate

重新创建
Meaning
to create or produce something again, especially a new version of something lost or destroyed
Example
The team recreated the lost dataset from backups.
团队从备份中重新创建了丢失的数据集。
C1 noun /ˌrɛs.ɪˈprɒs.ɪ.ti/

reciprocity

为了共同利益与他人交换物品的做法
Meaning
The practice of exchanging things with others for mutual benefit.
Example
Business relationships thrive on reciprocity.
商业关系依赖于互惠。
C2 adjective /ˈreɪ.moʊs/

ramose

分枝的
Meaning
having many branches.
Example
The ramose tree shaded the entire garden.
这棵分枝的树为整个花园提供了阴凉。
C1 adjective /ˈrɪvɪtɪŋ/

riveting

引人入胜
Meaning
extremely interesting; holding the complete attention
Example
The movie was so riveting that nobody looked away.
这部电影如此引人入胜，以至于没有人移开视线。
B2 noun /rʌʃ/

Rush

匆忙; 急促
Meaning
a sudden quick movement toward something; a period of great activity or demand; hurry
Example
There was a rush to buy tickets for the concert.
为购买音乐会门票而匆忙。
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。
B1 verb /rɪˈdʒekt/

reject

拒绝
Meaning
to refuse to accept or consider something
Example
The committee decided to reject the proposal.
委员会决定拒绝该提案。
C2 verb /rɪˈpruːv/

reprove

批评
Meaning
to criticize or correct someone gently or disapprove of their actions
Example
The teacher reproved the student for being late.
老师因学生迟到而批评了他。
B1 adjective /rɪˈlɪdʒəs/

Religious

宗教的; 虔诚的; 精神的; 与宗教相关的;
Meaning
relating to or believing in a religion; devout; spiritual;
Example
He comes from a very religious family.
他来自一个非常宗教的家庭。
B1 verb /rɪˈvjuː/

review

复习
Meaning
to examine or assess something again; to write a critical evaluation
Example
I need to review my notes before the exam.
我需要在考试前复习我的笔记。
B1 noun /rɪˈkɔːdɪŋ/

recording

录音
Meaning
the act or process of recording something
Example
The recording of the interview was clear and loud.
采访的录音清晰且响亮。
C1 adjective /rɪˈbel.jəs/

Rebellious

反叛的; 不服从的; 抵抗控制的;
Meaning
defying authority; resisting control; disobedient;
Example
The rebellious teenager refused to follow his parents' rules.
那个叛逆的青少年拒绝遵守父母的规则。
C1 verb /ˈrʌf.l̩/

ruffle

Meaning
to disturb the smoothness of something; to annoy or upset someone
Example
The wind ruffled her hair.
B1 verb /riˈækt/

react

反应
Meaning
to respond or behave in a particular way to something
Example
She reacted angrily when she heard the news.
她听到这个消息后愤怒地做出了反应。
C2 verb /ˈrʌmpəl/

rumple

弄皱
Meaning
to make something untidy or wrinkled by creasing or crumpling
Example
She accidentally rumpled her dress while packing.
她在打包时不小心弄皱了她的裙子。
B1 adjective /rɪˈmeɪnɪŋ/

remaining

剩余
Meaning
still existing or left after others are gone or dealt with
Example
There were only a few remaining tickets for the concert.
音乐会仅剩下少数票。
C1 noun /ˈrɪpəl/

Ripple

涟漪
Meaning
a small wave on the surface of water; a spreading effect or influence
Example
The stone created ripples across the calm pond.
石头在平静的池塘中激起了涟漪。
C1 verb /ˌrekəˈlekt/

recollect

回忆
Meaning
to remember something; to recall from memory
Example
I can't recollect where I put my keys.
我记不起来我把钥匙放在哪里了。
C1 verb /rɪˈdrɛs/

redress

纠正
Meaning
to set right, remedy, or compensate for a wrong or grievance
Example
The company promised to redress the complaints of its customers.
公司承诺纠正客户的投诉。
C1 noun /rɪdʒ/

ridge

山脊或山顶
Meaning
a long, narrow hilltop, mountain range, or raised strip
Example
We walked along the mountain ridge.
我们沿着山脊走。
C2 noun /rɪˈfræk.tər/

refractor

折射望远镜
Meaning
A type of telescope that uses lenses to focus light.
Example
Refractor telescopes use lenses to focus light.
折射望远镜使用透镜聚焦光线。
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 /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。
C1 noun/verb /ˈrɛprɪˌmænd/

reprimand

Meaning
A formal expression of disapproval; to scold or criticize someone officially.
Example
The teacher reprimanded the student for being late.
B1 noun /ˈrezɪdənt/

Resident

居民
Meaning
a person who lives somewhere permanently or on a long-term basis; living in a particular place
Example
She has been a resident of this city for over ten years.
她已经是这个城市的居民超过十年了。
C1 verb /ˌriːˈsiːt/

reseat

重新安排
Meaning
to seat someone again or to fit something back into its place
Example
The usher had to reseat the guests after the interruption.
引座员在干扰后不得不重新安排宾客。
B1 verb /rɪˈper/

repair

修理
Meaning
to fix something that is broken or damaged
Example
The mechanic will repair the car's engine tomorrow.
机械师明天将修理汽车发动机。
C2 noun /ˌrɛtəˈrɪʃən/

rhetorician

雄辩家
Meaning
A person who is skilled in the art of rhetoric or persuasive speaking/writing.
Example
The rhetorician captivated the audience with his eloquence.
雄辩家凭借其雄辩技巧吸引了听众。
C1 adjective /ˈrez.ə.luːt/

Resolute

坚决的；坚定的；不可动摇的
Meaning
determined; having a firm decision; unwavering
Example
She remained resolute in her decision to pursue her dreams.
她在追求梦想的决定中保持坚决。
C2 adjective /ˈrɛkənˌdaɪt/ or /ˈrɛkəndaɪt/

recondite

鲜为人知或难以理解的
Meaning
Little known or difficult to understand.
Example
The professor’s lecture was full of recondite theories.
教授的讲座充满了深奥的理论。
B2 verb /ˌriːəˈreɪndʒ/

rearrange

重新安排
Meaning
to change the order or position of something
Example
She decided to rearrange the furniture in her living room.
她决定重新安排客厅里的家具。
C1 noun /ˈreɪ.vən/

Raven

乌鸦
Meaning
a large, black bird with a thick bill and harsh croaking voice
Example
The raven perched on the old oak tree and cawed loudly.
那只乌鸦停在老橡树上大声地叫。
C2 noun /ˈræbəl/

Rabble

乌合之众
Meaning
a disorderly crowd; the common people regarded as socially inferior
Example
The politician dismissed the protesters as mere rabble.
政治家将抗议者视为仅仅是乌合之众。
C1 verb /rɪˈvɜːrbəreɪt/

reverberate

回响
Meaning
To echo repeatedly or have continuing effects.
Example
The sound of the explosion reverberated through the valley.
爆炸声在山谷中回响。
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 noun /ˈruːmər/

rumor

谣言
Meaning
a currently circulating story or report of uncertain or doubtful truth.
Example
There’s a rumor that the company will merge next year.
有传闻说公司明年将合并。
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 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 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 noun/verb /ræft/

raft

筏
Meaning
A flat structure made of logs or planks tied together, used as a boat or floating platform; to travel or transport on such a structure.
Example
They built a raft to cross the river.
他们建造了一只筏子来过河。
C1 adjective /rɪˈper.ə.bəl/

Repairable

可修复的
Meaning
able to be fixed or mended; capable of being repaired
Example
The broken phone is repairable with the right parts.
坏掉的手机可以用正确的部件修复。
C2 noun /rɪˈdʒɔɪndər/

rejoinder

回应
Meaning
a quick or witty reply; a response to a remark or argument
Example
His sharp rejoinder silenced the crowd.
他犀利的回答让人群安静下来。
B1 noun /ˈreɪlˌroʊd/

railroad

铁路
Meaning
a track or system of tracks made of steel rails along which trains run
Example
The railroad connects the city to several nearby towns.
铁路将城市与附近的几个小镇连接起来。
B2 noun /ˌrɛprɪzɛnˈteɪʃən/

representation

代表
Meaning
the action of speaking or acting on behalf of someone or something
Example
Her representation of the team was impeccable.
她对团队的代表非常出色。
C2 noun /rɪˌkrɪmɪˈneɪʃən/

recrimination

相互指责
Meaning
an accusation made in response to an accusation; mutual blaming
Example
The debate quickly descended into mutual recriminations.
辩论迅速变成了相互指责。
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。
C1 verb /rɪɡ/

rig

操控
Meaning
to manipulate or control something dishonestly; to set up equipment
Example
The election was rigged by corrupt officials.
选举被腐败官员操控了。
C1 verb /rɪˈkɔɪl/

recoil

后退
Meaning
To suddenly spring back in fear, horror, or from force such as a gun's kickback.
Example
She recoiled at the sight of the snake.
她看到蛇时吓得后退。
A1 verb /rɪˈmembə/

remember

记得
Meaning
to bring a past event back into one's mind; to keep in memory
Example
I remember my first day at school.
我记得我在学校的第一天。
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。
A1 noun, adjective, adverb /raɪt/

right

权利
Meaning
something that is morally good, fair, or just; or a legal/entitled claim
Example
Everyone has the right to free speech.
每个人都有言论自由的权利。
C1 noun /ˈrɛtɪsəns/

reticence

沉默
Meaning
the quality of being reserved or unwilling to speak freely
Example
His reticence made it difficult to know what he was thinking.
他的沉默让人很难知道他在想什么。
C1 noun /ˌrɛspɪˈreɪʃən/

respiration

Meaning
The process of breathing or the exchange of gases in living organisms.
Example
Respiration is essential for all living beings.
A1 noun /roʊd/

road

道路
Meaning
a wide way leading from one place to another
Example
We drove along the road to the village.
我们沿着这条路开车去村庄。
C2 adjective /rɪˈflɛktɪbəl/

reflectible

可反射的
Meaning
capable of being reflected, as light or an image
Example
The surface of the lake is highly reflectible in the morning sun.
湖面的反射性在早晨的阳光下非常强。
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。
C2 noun /rʌmp/

Rump

臀部; 屁股; 背部下方
Meaning
the hindquarters or buttocks; the lower back area
Example
The horse injured its rump during the fall.
那匹马在跌倒时伤到了它的臀部。
A2 adjective /rɪˈspɒn.sə.bəl/

Responsible

负责任的；有义务的；可靠且值得信赖的
Meaning
accountable; having duties; reliable and trustworthy
Example
Parents are responsible for their children's education and well-being.
父母对孩子的教育和福利负责。
B1 verb /rɪˈleɪt/

relate

叙述
Meaning
to connect or show a link between; to tell a story
Example
She relates her experience to the audience.
她向观众讲述她的经历。
B2 noun ˈrɛstɪŋ pleɪs

resting place

安息地
Meaning
A place where someone or something rests, especially a burial site.
Example
The resting place of the martyrs is near the river.
烈士的安息地靠近河流。
C1 verb /rɪˈzaʊnd/

resound

回响
Meaning
To fill a place with sound; to be celebrated or talked about widely.
Example
The hall resounded with applause.
大厅里回荡着掌声。
C1 verb /rɪˈkuːpəreɪt/

recuperate

恢复
Meaning
to recover from illness or regain strength
Example
She went to the countryside to recuperate after surgery.
她去乡下恢复健康，手术后。
C2 verb /rɪˈsɪnd/

rescind

撤销
Meaning
to revoke, cancel, or repeal a law, order, or agreement
Example
The company decided to rescind the job offer.
公司决定撤销工作机会。
C2 adjective /rɪˈkʌmbənt/

recumbent

躺着
Meaning
lying down or in a resting position
Example
He was found recumbent on the sofa after a long day.
他在长时间的一天后被发现躺在沙发上。
C1 noun /ˈredʒ.ɪ.mən/

regimen

为促进或恢复健康而规定的治疗、生活方式或饮食方案
Meaning
A prescribed course of medical treatment, way of life, or diet for the promotion or restoration of health.
Example
A strict exercise regimen improves overall fitness.
严格的锻炼方案改善了整体健康。
C1 noun /ˌrætɪfɪˈkeɪʃən/

Ratification

批准
Meaning
the action of signing or giving formal consent to a treaty, contract, or agreement
Example
The treaty required ratification by both countries' parliaments.
该条约要求两国议会的批准。
C2 noun /ˈrɒndoʊ/

rondo

音乐作品（具有重复主题）
Meaning
a musical composition with a recurring leading theme
Example
The pianist ended the recital with a lively rondo.
钢琴家以一首生动的朗多结束了演奏。
C1 verb /rɪˈpiːl/

repeal

Meaning
To officially cancel or revoke a law or decision.
Example
The government decided to repeal the outdated law.
C1 noun /ˈrəʊ.bɒt əˈsɪs.tɪd prəˈsiː.dʒərz/

robot-assisted procedures

机器人辅助程序
Meaning
Medical operations performed with the help of robotic systems to enhance precision and control.
Example
Robot-assisted procedures reduce human error.
机器人辅助程序减少了人为错误。
C2 adjective /rɪˈmiːdiəbl/

remediable

可修复的
Meaning
capable of being corrected or cured
Example
The mistake was serious but still remediable.
这个错误很严重，但仍然是可修复的。
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 adjective /ˈræp.ɪd/

Rapid

快速的；迅速的；急速的；
Meaning
happening in a short time or at a fast pace
Example
The rapid growth of technology has changed our daily lives.
技术的快速增长改变了我们的日常生活。
B1 adjective /rʌf/

Rough

粗糙的; 粗糙; 严厉的
Meaning
having an uneven surface; not smooth; harsh
Example
The rough surface of the rock hurt my hands.
岩石的粗糙表面伤害了我的手。
B2 noun /reɪk/

Rake

耙子
Meaning
a garden tool with a long handle and prongs for gathering leaves; to gather with a rake
Example
He used a rake to gather the fallen autumn leaves.
他用耙子收集掉落的秋天叶子。
A2 noun /ruːf/

roof

屋顶
Meaning
the top covering of a building or vehicle
Example
The roof of the house needs to be repaired.
房子的屋顶需要修理。
B1 adjective /rɪˈtaɪərd/

Retired

退休
Meaning
having left one's job and ceased to work; withdrawn from activity
Example
My retired grandfather enjoys gardening in his free time.
我的退休祖父喜欢在空闲时间种花。
C1 verb /rɪˈvoʊk/

revoke

撤销
Meaning
To officially cancel or withdraw a decision, privilege, or right.
Example
The government decided to revoke his passport.
政府决定撤销他的护照。
C1 adjective /ˈrʌs.tɪk/

Rustic

简单而不复杂；与乡村地区相关
Meaning
simple and unsophisticated; relating to rural areas
Example
The rustic cottage had wooden beams and a thatched roof.
那座乡村小屋有木梁和茅草屋顶。
C1 verb /ˈrevəl/

revel

陶醉
Meaning
to enjoy oneself in a lively and noisy way; to take great pleasure in
Example
They revel in their success.
他们沉浸在成功中。
C1 noun /ræˈpɔːr/

rapport

关系
Meaning
A close and harmonious relationship in which the people or groups concerned understand each other's feelings or ideas.
Example
The teacher built a strong rapport with her students.
老师与学生建立了良好的关系。
C1 verb /ˈrɛlɪɡeɪt/

relegate

降级
Meaning
to assign to a lower rank, position, or category
Example
The manager decided to relegate the player to the bench.
经理决定将球员降级到替补席。
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 adverb /ruːˈtiːnli/

routinely

定期地
Meaning
as part of a regular procedure; habitually
Example
The staff routinely checks the equipment for safety.
工作人员定期检查设备的安全性。
C1 adjective /rɪˈmiːdiəl/

Remedial

补救的; 修正的; 治疗的;
Meaning
intended as a remedy; corrective; providing a cure;
Example
The students need remedial classes to improve their math skills.
学生们需要补习课来提高他们的数学技能。
C2 noun /ˌræʃioʊsɪˈneɪʃən/

ratiocination

推理
Meaning
the process of reasoning or logical thinking
Example
His ratiocination impressed the judges during the debate.
他的推理在辩论中给裁判留下了深刻印象。
C1 adjective /rɪˈstreɪnd/

restrained

克制的
Meaning
characterized by reserve or self-control; held back
Example
Her restrained reaction surprised everyone.
她克制的反应让所有人都感到惊讶。
B2 verb /rɪˈkɔːl/

recall

回忆
Meaning
to bring (a memory, fact, or situation) back into one's mind
Example
I can't recall the last time we met.
我记不得我们上次见面是什么时候。
C1 adjective /rɪˈtæl.i.ə.tɔːr.i/

retaliatory

报复性
Meaning
Taking action in response to another's action, characterized as punitive, revengeful, or counteractive.
Example
The country imposed retaliatory tariffs in response to trade sanctions.
该国对贸易制裁实施了报复性关税。
C2 adjective /raɪˈpɛə.ri.ən/

riparian

位于河流或其他水道的岸边或与之相关的
Meaning
Relating to or situated on the banks of a river or other watercourse.
Example
Riparian vegetation helps prevent soil erosion along rivers.
河岸植被有助于防止河流沿岸的土壤侵蚀。
B2 noun /roʊˈteɪʃən/

Rotation

旋转; 转动; 自转
Meaning
the action of rotating around an axis or center; a single turn
Example
The Earth's rotation takes 24 hours to complete.
地球的自转需要24小时才能完成。
B2 adjective /rɪˈliːvd/

relieved

松了一口气
Meaning
feeling happy and less worried after something stressful has been removed or resolved
Example
She felt relieved after hearing the good news.
听到好消息后，她感到松了一口气。
C1 verb rɪˈplɛn.ɪʃ

replenish

补充
Meaning
Fill something up again.
Example
Drinking water helps replenish lost fluids in the body.
喝水有助于补充身体失去的液体。
C2 adjective /ˈrævənɪŋ/

ravening

饥饿和贪婪
Meaning
Extremely hungry and greedy; voracious.
Example
The ravening wolves circled the camp.
饥饿的狼包围了营地。
C1 noun ˈrez.ɪ.djuːz

residues

残留物
Meaning
A small amount of something that remains after the main part has gone or been taken or used.
Example
The burning process leaves no harmful residues.
燃烧过程不会留下有害的残留物。
B1 noun ruːlz ənd ˌrɛɡjʊˈleɪʃənz

rules and regulations

规则和规定
Meaning
Official orders and laws that control how something is done.
Example
Rules and regulations alone cannot change attitudes.
单靠规则和规定无法改变态度。
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。
C1 adjective /ˈraʊzɪŋ/

rousing

激动人心
Meaning
Exciting, inspiring, or stirring.
Example
The speaker delivered a rousing speech that moved the audience.
演讲者发表了一个激动人心的演讲，打动了观众。
A1 noun ˈræbɪt

rabbit

兔子
Meaning
A small mammal with long ears, long hind legs, and a short tail
Example
The rabbit ran quickly into the forest.
兔子快速地跑进了森林。
A2 verb /rɪˈkwaɪər/

require

需要
Meaning
to need something; to demand or insist on
Example
This job requires excellent communication skills.
这份工作要求出色的沟通技巧。
C1 noun/verb /rɪˈlæps/

relapse

复发
Meaning
to return to a worse condition, especially after improvement; a deterioration after recovery
Example
After months of progress, he suffered a relapse.
经过几个月的进展后，他遭遇了复发。
C2 adjective /ˌriːkruːˈdɛsənt/

recrudescent

重新爆发
Meaning
reviving or breaking out again after a period of abatement
Example
Recrudescent tensions threatened the fragile ceasefire.
重新爆发的紧张局势威胁到脆弱的停火协议。