rejoicing
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C1 noun /rɪˈdʒɔɪsɪŋ/

rejoicing

欢庆
Meaning
The action of showing great joy or happiness
Example
There was much rejoicing after the victory.
胜利之后有很多欢庆。
C1 adjective /ræpt/

Rapt

着迷的
Meaning
completely fascinated or absorbed by what one is seeing or hearing
Example
The children listened with rapt attention to the storyteller.
孩子们专心听故事讲述者的话。
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。
C1 noun /rɪˈpen.təns/

Repentance

悔改
Meaning
the action of repenting; sincere regret or remorse
Example
His genuine repentance moved everyone in the courtroom.
他真正的悔改感动了法庭上的所有人。
C1 adjective /ˌrɛtroʊˈæktɪv/

retroactive

追溯的
Meaning
applying to a period before it was enacted or established
Example
The new law was made retroactive to cover past cases.
新法律追溯适用于过去的案件。
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.
B1 verb /rɪˈtaɪə/

retire

退休
Meaning
to stop working after reaching a certain age or having completed a career
Example
She decided to retire after working for 40 years.
她决定在工作了40年后退休。
B2 adverb /rɪˈpɔːtɪdli/

reportedly

据报道
Meaning
according to what is said or believed, although not confirmed
Example
The company has reportedly agreed to the new terms.
公司 reportedly 已同意新的条款。
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。
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 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。
C1 adjective /ˈrʌɡ.ɪd/

Rugged

粗糙不平；表面不规则；强壮而坚固
Meaning
rough and uneven; having a rough irregular surface; tough and strong
Example
The hikers crossed the rugged mountain terrain.
登山者穿越了崎岖的山地地形。
C1 verb /rɪˈdiːm/

redeem

兑换
Meaning
to compensate for faults or mistakes; to exchange something for value
Example
He managed to redeem his reputation after the scandal.
他在丑闻后成功地挽回了自己的声誉。
B1 noun rɪˈflɛkʃən

reflection

反射
Meaning
Serious thought or consideration about something.
Example
The reflection of the past filled his heart with sadness.
过去的反射使他的心充满了悲伤。
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。
B1 adjective /rɔː/

Raw

生的; 未处理的; 自然状态; 没有经验的
Meaning
uncooked; not processed; in natural state; inexperienced
Example
The chef prefers to use raw vegetables in his salads.
厨师喜欢在沙拉中使用生蔬菜。
B2 adjective /ˈreɪsɪst/

racist

种族主义者
Meaning
showing or feeling discrimination or prejudice against people of other races
Example
He was accused of making racist comments.
他被指控发表种族主义的评论。
B1 noun /ˌrɛdʒɪˈstreɪʃən/

registration

注册
Meaning
the action or process of enrolling or signing up for something
Example
The registration for the event will close tomorrow.
活动的注册将在明天关闭。
C2 noun /rɪˈfrɪndʒənsi/

refringency

折射率
Meaning
The ability of a substance to bend light; refractive power.
Example
Glass has a higher refringency than water.
玻璃的折射率高于水。
B1 noun ˌrek.ə.menˈdeɪ.ʃənz

recommendations

建议
Meaning
Suggestions or proposals as to the best course of action.
Example
The commission submitted their recommendations.
委员会提交了他们的建议。
C2 noun/adjective /rɪˈmɒnstrənt/

remonstrant

抗议者
Meaning
A person who makes a forceful protest (noun); protesting or objecting (adjective).
Example
He was a remonstrant voice in the assembly.
他是会议中的抗议声音。
A2 verb /rɪˈmuːv/

remove

移除
Meaning
to take something away; to eliminate or delete
Example
Please remove your shoes before entering the house.
请在进入房屋之前脱下鞋子。
C1 adjective /rɪˈmoʊtɪd/

remoted

远程的
Meaning
placed at a distance; made remote
Example
The system was remoted to a secure location.
系统已被远程到一个安全的地方。
B1 noun ˌrekəɡˈnɪʃn

recognition

认可
Meaning
Acknowledgment of the existence, validity, or legality of something; appreciation or acclaim for an achievement, service, or ability.
Example
He earned recognition after years of struggle.
他在多年奋斗后获得了认可。
B2 noun /ræk/

Rack

架子
Meaning
a framework or structure for holding or storing things
Example
She hung her coat on the rack by the door.
她把外套挂在门旁的架子上。
B2 noun /ˈrɪə.lɪ.zəm/

realism

现实主义
Meaning
The quality of representing things as they are; a practical or factual view.
Example
Her paintings are admired for their realism.
她的画作因其现实主义而受到赞赏。
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。
C2 verb /rɪˈspaɪər/

respire

呼吸
Meaning
To breathe in and out; to inhale and exhale.
Example
Plants also respire to release energy.
植物也呼吸以释放能量。
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。
A2 verb /rɪˈtɜːrn/

return

返回
Meaning
to come or go back to a place; to give back
Example
I will return home tomorrow.
我明天会回家。
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 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 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。
A2 adjective /rɪtʃ/

Rich

富有的; 有钱的; 宝贵的
Meaning
having a lot of money or valuable possessions; abundant in nutrients or flavor
Example
The rich businessman donated money to the charity.
富有的商人向慈善捐款。
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。
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。
C2 adjective /ˈruːnɪk/

runic

与符文相关
Meaning
relating to or consisting of runes; mysterious or magical
Example
The old stone had strange runic carvings on it.
这块古老的石头上有奇怪的符文雕刻。
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。
B1 noun /rɪˈkwɛst/

request

Meaning
a formal or polite demand for something
Example
She made a request for additional time to complete the project.
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。
C2 noun /ˌriːkəˌpɪtjʊˈleɪʃən/

recapitulation

重述
Meaning
The act of summarizing or repeating the main points of something.
Example
The professor gave a brief recapitulation of the lecture before ending the class.
教授在结束课程之前简要地重述了讲座内容。
C2 noun /rɪˈsɪʒən/

rescission

取消
Meaning
the cancellation or annulment of a law, contract, or agreement
Example
The rescission of the contract left both parties disappointed.
合同的取消让双方都感到失望。
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。
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。
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。
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。
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。
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。
A2 verb /rɪˈmaɪnd/

remind

提醒
Meaning
to cause someone to remember something
Example
Please remind me to call her tomorrow.
请提醒我明天打电话给她。
C1 adjective rɪˈlɛntləs

relentless

不屈不挠
Meaning
Oppressively constant; incessant; showing no abatement of severity, intensity, strength, or pace.
Example
The freedom fighters' relentless struggle led to victory.
自由战士们的不屈不挠的斗争导致了胜利。
C2 noun /rɪˈpruːf/

reproof

指责，谴责
Meaning
An expression of blame or disapproval.
Example
His careless words drew a sharp reproof from his mother.
他不小心的话语引来了母亲的严厉指责。
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。
B1 adjective /ˈrel.ə.vənt/

Relevant

相关的
Meaning
closely connected or appropriate to what is being discussed; pertinent
Example
Please provide only relevant information for this discussion.
请提供仅与本次讨论相关的信息。
B2 adjective /ˈrɪdʒ.ɪd/

Rigid

严格
Meaning
hard and stiff; not able to bend; strict and unwilling to change
Example
The company has a rigid dress code that all employees must follow.
公司有严格的着装要求，所有员工都必须遵守。
B2 verb /rɪˈkleɪm/

reclaim

Meaning
To take back or recover something; to restore to a usable state.
Example
The farmer worked to reclaim the barren land.
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 /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 noun /ˈrɛzərvwɑːr/

reservoir

水库
Meaning
A large natural or artificial lake used as a source of water supply.
Example
The city built a new reservoir to ensure enough drinking water for its residents.
这座城市建造了一个新的水库，以确保为居民提供足够的饮用水。
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。
B1 noun /ˈreɪn.boʊ/

Rainbow

彩虹
Meaning
an arch of colors formed in the sky by sunlight shining through rain
Example
After the storm, a beautiful rainbow appeared in the sky.
暴风雨后，天空中出现了美丽的彩虹。
B1 noun, verb /ˈrɒkɪt/

rocket

幸福
Meaning
a missile or vehicle propelled by a rocket engine; to increase or move very quickly
Example
The company’s profits rocketed after the new product launch.
当她获得奖项时，她无法掩饰她的幸福。
C1 adjective /rɪˈzɪdjuəl/

residual

剩余的
Meaning
Remaining after the greater part has gone.
Example
The patient experienced residual pain after the surgery.
病人在手术后经历了剩余的疼痛。
C1 noun /rɪˈfaɪnəri/

refinery

炼油厂
Meaning
an industrial facility where raw materials are processed and purified
Example
The oil refinery processes thousands of barrels daily.
石油炼油厂每天处理数千桶石油。
C1 noun /ˈrʌbəl/

rubble

瓦砾
Meaning
Broken stone, bricks, or debris from a collapsed building or structure.
Example
The rescue team searched through the rubble after the earthquake.
地震后，救援队在瓦砾中寻找。
C1 adjective /ˈroʊtəri/

rotary

旋转的
Meaning
Relating to or characterized by rotation; revolving around an axis.
Example
The machine uses a rotary engine to function efficiently.
这台机器使用旋转引擎高效地工作。
C2 verb /rɛnd/

rend

撕裂
Meaning
to tear something apart violently or forcefully
Example
The explosion rent the air with a deafening noise.
爆炸以震耳欲聋的声音撕裂了空气。
B2 noun /ˌrɛɡ.jʊˈleɪ.ʃən/

regulation

由权威制定和维护的规则或指令
Meaning
A rule or directive made and maintained by an authority.
Example
Government regulation ensures fair business practices.
政府规则确保公平的商业实践。
B1 verb /rɪˈkʌvər/

recover

恢复
Meaning
To return to a normal state of health, mind, or strength; to regain or save something.
Example
The world is struggling to recover from the pandemic.
世界正在努力从大流行中恢复过来。
A2 noun /rɪˈleɪ.ʃən.ʃɪp/

Relationship

关系
Meaning
the way two people or groups feel and behave towards each other; a connection between two things
Example
They have a very close relationship.
他们有着非常亲密的关系。
C2 adjective /rɪˈfjuː.tə.bəl/

Refutable

可反驳的
Meaning
capable of being proven wrong or false; able to be disproved
Example
His theory was refutable because it could be tested experimentally.
他的理论是可以被反驳的，因为它可以通过实验测试。
C2 noun /ræŋˈɡuːn ˈkriːpər/

Rangoon creeper

缅甸爬山虎
Meaning
A climbing vine with fragrant flowers that change color from white to pink to red
Example
The Rangoon creeper covered the entire fence with its sweet-smelling flowers.
缅甸爬山虎用它甜美的花朵覆盖了整个篱笆。
C1 verb /riːˈpeɪ.tri.eɪt/

repatriate

遣返
Meaning
To return someone to their own country, often after war or imprisonment.
Example
The government worked to repatriate the refugees safely.
政府努力确保安全地将难民遣返回国。
B2 verb /roʊm/

roam

漫游
Meaning
to walk or travel without a specific destination; to wander
Example
Wild animals roam freely in the forest.
野生动物在森林中自由漫游。
B1 adjective /ˈrɔɪ.əl/

Royal

皇家
Meaning
belonging to or connected with the monarch or monarchy; magnificent; excellent
Example
The royal family attended the ceremony.
皇室家族参加了仪式。
B1 adjective /rɪˈdɪk.jə.ləs/

Ridiculous

荒谬的; 可笑的; 愚蠢的
Meaning
extremely silly or unreasonable; deserving or causing laughter
Example
The idea of building a house without tools is ridiculous.
没有工具建房子的想法是荒谬的。
C1 verb /rɪˈvɪər/

revere

敬仰
Meaning
To deeply respect or admire someone or something.
Example
The students revered their teacher for his wisdom.
学生们因他的智慧而敬重老师。
C1 adjective /ˌrɛmɪˈnɪsənt/

reminiscent

唤起回忆的
Meaning
Tending to remind one of something; suggestive of something in the past.
Example
The smell of rain is reminiscent of my childhood in the village.
雨的气味让我想起了我在村里的童年。
A2 noun /rɒk/

rock

岩石
Meaning
a large, solid piece of mineral matter
Example
The mountain was made of solid rock.
这座山是由坚固的岩石组成的。
C2 adjective /rɪˈmjuːnərətɪv/

remunerative

有利可图
Meaning
Financially rewarding or profitable.
Example
He chose a remunerative career in medicine.
他选择了医学领域一个有利可图的职业。
C1 verb /riːˈkæptʃər/

recapture

重新夺回
Meaning
To take back or regain possession of something.
Example
The army managed to recapture the lost territory.
军队成功地重新夺回了失去的领土。
C1 verb /reɪv/

rave

赞扬
Meaning
to speak or write about something with great enthusiasm or admiration
Example
Critics rave about the new movie.
评论家们对新电影赞不绝口。
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 adjective /ˈræʃ.ən.əl/

Rational

理性; 合理; 逻辑
Meaning
based on reason and logic; sensible and practical
Example
She made a rational decision based on the available facts.
她根据可用的事实做出了理性的决定。
C1 noun /rɪˈflɛktər/

reflector

反射器
Meaning
A surface or device that reflects light, heat, or sound, often used to direct beams or improve visibility.
Example
The cyclist attached a red reflector to the back of his bike for safety.
骑自行车的人将一个红色反射器固定在他自行车的后面以确保安全。
C2 noun /rɪˈmɒnstrəns/

remonstrance

抗议
Meaning
A forceful protest or objection.
Example
The workers’ remonstrance against unfair treatment was ignored.
工人的抗议反对不公平待遇被忽视了。
C1 noun ˌriː.pɚˈkʌʃ.ənz

repercussions

后果
Meaning
The unintended consequences or effects of an action or event.
Example
The new policy had unintended repercussions on the economy.
新的政策对经济产生了意外的影响。
C2 noun /rɪˌdʒuːvəˈnɛsəns/

rejuvenescence

重生
Meaning
the action or process of becoming young or fresh again
Example
The forest showed signs of rejuvenescence after the rains.
雨后森林展现出重生的迹象。
C1 adjective /ˈreɪ.kɪʃ/

Rakish

俏皮
Meaning
having a dashing, jaunty, or slightly disreputable quality or appearance
Example
He wore his hat at a rakish angle that gave him a charming appearance.
他戴着一顶俏皮的帽子，给人一种迷人的感觉。
C1 noun ˌrɛk.əˈlɛk.ʃən

Recollection

回忆
Meaning
Remembering past events or information
Example
His recollection of childhood memories was vivid.
他对童年记忆的回忆很生动。
C2 adjective /rɪˈdaʊ.tə.bəl/

redoubtable

可怕/值得尊敬
Meaning
formidable, especially as an opponent; inspiring fear or respect
Example
She was a redoubtable leader who commanded respect from all.
她是一个可怕的领导，赢得了所有人的尊重。
C1 noun rɪˈdʌndənsi

redundancy

冗余，过剩
Meaning
The state of being not or no longer needed or useful; superfluousness.
Example
The redundancy in the company's workforce led to many layoffs.
公司员工中的冗余导致了大量裁员。
C1 verb rɪˈlɪŋ.kwɪʃ

relinquish

放弃
Meaning
To give up any authority, responsibility, or property.
Example
He decided to relinquish his position as CEO.
他决定放弃CEO职位。
C1 noun /rɪˈsaɪtl/

recital

独奏会
Meaning
A performance of music, dance, or poetry, usually by a soloist.
Example
She gave a piano recital at the concert hall.
她在音乐会中举办了钢琴独奏会。
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。
C1 adjective ˈriːdʒən spəˈsɪfɪk

region-specific

区域特定
Meaning
Relating to or characteristic of a particular region or area.
Example
Climate change impacts are region-specific.
气候变化的影响是区域特定的。
C1 noun ˈrɔɪəl ˈbɛŋɡəl ˈtaɪɡər

Royal Bengal Tiger

皇家孟加拉虎
Meaning
A subspecies of tiger found primarily in India and Bangladesh, known for its distinctive orange coat with black stripes.
Example
The Royal Bengal Tiger is an iconic species of the Sundarbans.
皇家孟加拉虎是孙德班的标志性物种。
C1 verb /ˈrævɪdʒ/

ravage

摧毁
Meaning
to cause severe and extensive damage or destruction
Example
The hurricane ravaged the coastal villages.
飓风摧毁了沿海村庄。
C1 noun /ræmˈbuːtən/

Rambutan

红毛丹
Meaning
a tropical fruit with red spiky skin and white translucent sweet flesh similar to litchi
Example
The rambutan looks scary with its hairy skin but tastes very sweet inside.
红毛丹看起来很吓人，毛茸茸的皮肤，但里面的味道非常甜。
B2 noun /ˈrɒbər/

robber

强盗
Meaning
a person who steals property from others, often using force or threat
Example
The robber was caught after a quick police chase.
经过警方的快速追捕，强盗被抓住了。
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 /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 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 /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。
C1 verb /rænt/

rant

大喊大叫
Meaning
to speak or shout in an angry, uncontrolled way
Example
He ranted about the unfair treatment at work.
他在工作中大声抱怨不公正的待遇。
C1 adjective /rɪˈsɜːrdʒənt/

resurgent

复兴的
Meaning
Becoming strong, active, or popular again.
Example
The resurgent economy gave hope to many businesses.
复兴的经济给许多企业带来了希望。
B2 adjective /rɪˈlʌktənt/

Reluctant

不情愿的; 犹豫的; 不愿意做某事;
Meaning
unwilling; hesitant; disinclined to do something;
Example
She was reluctant to share her personal information.
她不情愿分享个人信息。
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。
C1 noun /rɪˈtrækʃən/

retraction

撤回，撤回声明
Meaning
the act of taking back a statement, promise, or belief
Example
The newspaper issued a retraction of the false report.
报纸发布了对虚假报道的撤回。
B1 noun /ˈrʌnər/

runner

幸福
Meaning
a person who runs, especially in races or for exercise
Example
The runner crossed the finish line with a big smile.
当她收到奖项时，她无法掩饰自己的幸福。
C1 noun /rɪˈpreʃən/

Repression

压制
Meaning
the action of subduing someone or something by force; the restraint, prevention, or inhibition of a feeling, impulse, etc.
Example
The government's repression of free speech sparked widespread protests.
政府对言论自由的压制引发了广泛的抗议。
C2 noun /ˈruː.mɪ.nənt/

ruminant

反刍动物
Meaning
a cud-chewing mammal, such as a cow or sheep
Example
Cows are ruminants that chew cud.
牛是反刍动物，它们会反复咀嚼食物。
A1 verb /rʌn/

run

跑步
Meaning
to move quickly on foot; to operate or function
Example
I run every morning for exercise.
我每天早上跑步锻炼。
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。
B1 verb /rʌb/

rub

摩擦
Meaning
to press and move something firmly against a surface; to apply pressure with movement
Example
She rubbed her hands together to keep them warm.
她搓手来保持温暖。
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。
C1 verb /ˌriːɪnˈtɪɡreɪt/

reintegrate

重新融入
Meaning
To bring someone or something back into a group or society after being separated.
Example
The program helps prisoners reintegrate into society.
该程序帮助囚犯重新融入社会。
B2 noun ˌrɛstəˈreɪʃən

restoration

修复
Meaning
The process of returning something to its former condition.
Example
The restoration of the forest began after decades of neglect.
森林的修复开始于数十年的忽视之后。
B1 noun rɪˈdʌk.ʃən

reduction

减少
Meaning
The action or fact of making a specified thing smaller or less in amount, degree, or size.
Example
Greenhouse gas reduction is a primary global goal.
减少温室气体排放是一个主要的全球目标。
C1 adjective /ˈroʊ.ɡɪʃ/

Roguish

调皮的; 狡猾的
Meaning
mischievous; playfully dishonest
Example
His roguish smile suggested he was up to some mischief.
他的调皮笑容暗示着他正在策划一些恶作剧。
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。
A1 adjective /ˈreɪ.di.əʊ/

radio

收音机
Meaning
Relating to radio waves or broadcasting.
Example
FAST is the largest radio telescope in the world.
FAST是世界上最大的射电望远镜。