rationalism
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C2 noun /ˈræʃənəlɪzəm/

rationalism

理性主义
Meaning
a belief or theory that opinions and actions should be based on reason and knowledge rather than religious belief or emotion
Example
Rationalism emphasizes logic and reasoning over faith.
理性主义强调逻辑和推理，而不是信仰。
B2 adjective /rɪˈzɪl.i.ənt/

resilient

韧性
Meaning
Able to withstand or recover quickly from difficult conditions.
Example
Resilient materials ensure durability.
韧性材料确保耐用性。
B2 verb /rɪˈliːv/

relieve

Meaning
to make pain, distress, or difficulty less severe or serious
Example
The medicine helped relieve his headache.
C1 noun /ruːz/

Ruse

诡计; 计谋
Meaning
an action intended to deceive someone; a trick or stratagem
Example
The thief used a clever ruse to distract the guard.
小偷使用了一种巧妙的诡计来分散警卫的注意力。
C1 noun /ˈrɪdəns/

riddance

摆脱
Meaning
The action of getting rid of something unwanted or unpleasant.
Example
His departure was considered a welcome riddance by the team.
他的离开被团队视为一种欢迎的摆脱。
C1 verb /rɪˈtɔːrt/

retort

反驳
Meaning
To reply quickly or sharply, often in a witty or angry manner.
Example
He quickly retorted that he was not to blame.
他迅速回应说他没有错。
C1 verb /ˌriːˈkɒn.stɪ.tʃuːt/

reconstitute

重建
Meaning
to restore something to its original form or state; to reassemble
Example
The group was reconstituted after the leader returned.
该小组在领导人归来后重新组建。
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。
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。
B2 noun /rɪˈmaɪndər/

reminder

提醒
Meaning
something that helps you remember a fact, event, or action that you need to do or recall
Example
He set a reminder to call his mother on her birthday.
他设置了一个提醒，提醒自己在母亲的生日打电话给她。
C1 verb /raɪl/

rile

Meaning
to irritate or annoy someone
Example
His careless comments really riled her.
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。
B1 noun /rɪˈwɔːd/

reward

奖励
Meaning
something given in recognition of service, effort, or achievement
Example
He received a reward for returning the lost wallet.
他因归还丢失的钱包而获得奖励。
B2 noun /rɪˈsɪp.i.ənt/

Recipient

接收者
Meaning
a person who receives something
Example
She was the recipient of the prestigious award.
她是这个著名奖项的接收者。
C1 noun /rɑk sɔlt/

Rock Salt

岩盐
Meaning
natural salt crystals formed from evaporated ancient seas; unrefined salt
Example
Rock salt is considered healthier than table salt.
岩盐被认为比食盐更健康。
B1 adverb /ˈruːdli/

Rudely

无礼地
Meaning
in an impolite or discourteous manner
Example
He rudely interrupted the speaker during the presentation.
他在演讲期间无礼地打断了发言者。
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。
C1 adjective /rɪˈdʌn.dənt/

redundant

多余的
Meaning
Not or no longer needed or useful; superfluous.
Example
The report contained redundant information.
报告包含了多余的信息。
B1 noun /rɪˈkʌvəri/

recovery

恢复
Meaning
the process of recovering or returning to a normal state
Example
The patient is in recovery after the surgery.
患者在手术后正在恢复中。
C2 adjective /rɪˈprɛsəbl̩/

repressible

可抑制的
Meaning
Capable of being restrained or suppressed.
Example
The movement proved to be hardly repressible.
这个运动被证明几乎是可以抑制的。
C2 adjective /rɪˈzɪstləs/

resistless

无法抗拒
Meaning
Impossible to resist; having an overpowering effect.
Example
She felt a resistless urge to laugh at the joke.
她感到无法抗拒的冲动，忍不住笑出声。
A2 noun /rɪˈlɪdʒ.ən/

religion

宗教
Meaning
a system of faith and worship involving belief in a higher power
Example
Freedom of religion is a fundamental human right.
宗教自由是基本人权。
C1 noun /rɪˈkɒnɪsəns/

reconnaissance

侦察
Meaning
A survey or exploration, especially for military or strategic purposes.
Example
The soldiers conducted a reconnaissance of the enemy camp.
士兵们进行了敌营的侦察。
C1 verb /ˌrevəˈluːʃənaɪz/

revolutionize

革命化
Meaning
Change (something) radically or fundamentally.
Example
Artificial intelligence is set to revolutionize the healthcare sector.
人工智能准备革命化医疗行业。
C2 adjective /roʊˈtʌnd/

rotund

圆形的
Meaning
round or plump in shape; full in sound
Example
The rotund cat struggled to climb the fence.
那只圆形的猫爬不上围栏。
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 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 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。
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。
A2 verb /raɪz/

rise

上升
Meaning
to move upward; to get up from bed; to increase
Example
The sun rises in the east.
太阳从东方升起。
C1 noun /roʊz ˈber.i/

Rose berry

玫瑰莓
Meaning
a type of berry with rose-like characteristics or flavor
Example
The rose berry has a delicate floral taste that reminds me of roses.
玫瑰莓具有细腻的花香口感，让我想起玫瑰花。
B2 verb /rɪˈsaɪt/

recite

背诵
Meaning
To say aloud something learned, especially poetry or text, from memory.
Example
The child recited a poem in front of the class.
孩子在班级前朗诵了一首诗。
C1 adjective /ˈrænsɪd/

rancid

变质的
Meaning
having a bad taste or smell due to being old or spoiled (especially fats or oils)
Example
The butter had gone rancid after being left out too long.
黄油放得太久，变质了。
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。
C2 noun /riːm/

ream

令纸
Meaning
A large quantity of paper (typically 500 sheets); informally, a large amount of something.
Example
The office ordered ten reams of paper.
办公室订购了十令纸。
A1 adverb /ˈriː.ə.li/

Really

实际上; 真的; 非常多
Meaning
actually; truly; very much
Example
I really enjoyed the concert last night.
我真的很享受昨晚的音乐会。
B2 adjective /ˈroʊlɪŋ/

rolling

滚动
Meaning
moving in gentle undulations; moving forward by turning over and over
Example
They drove through the rolling hills of the countryside.
他们开车穿过乡村的滚动山丘。
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/verb rɪˈfɔːm

reform

改革
Meaning
Make changes in (something, typically a social, political, or economic institution or practice) in order to improve it.
Example
Reform in the education system was a priority.
教育系统的改革是优先事项。
B2 adjective /rɪˈzɪstənt/

resistant

抗性
Meaning
not affected by something; able to oppose or withstand
Example
This fabric is resistant to water and stains.
这块布料对水和污渍具有抗性。
B2 verb /rɪˈfreʃ/

refresh

使清新
Meaning
to make fresh again; to restore energy
Example
A cold drink refreshes me on hot days.
冷饮在炎热的日子里让我感到清爽。
B2 noun /ˈruːstər/

rooster

公鸡
Meaning
A male domestic chicken, especially one that crows.
Example
The rooster crowed at dawn, waking up the whole village.
公鸡在黎明时分打鸣，唤醒了整个村庄。
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。
C1 adjective /ˈrɛtɪsənt/

reticent

沉默寡言
Meaning
not revealing one's thoughts or feelings readily; reserved
Example
She was reticent about her personal life.
她对自己的个人生活保持沉默。
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。
B1 noun riˈæləti

reality

现实
Meaning
The world or the state of things as they actually exist, as opposed to an idealistic or notional idea.
Example
The reality of the situation was evident.
情况的现实是显而易见的。
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 noun /ˌriː.pəˈkʌʃ.ən/

repercussion

后果
Meaning
An unintended consequence occurring some time after an event or action.
Example
The economic crisis had severe repercussions on global trade.
经济危机对全球贸易产生了严重的后果。
B1 adverb /ˈriː.zən.ə.bli/

Reasonably

合理地; 合适地;
Meaning
in a sensible way; fairly; to a moderate degree
Example
The hotel room was reasonably priced for the location.
酒店房间根据位置的合理定价。
B2 adjective ˈræd.ɪ.kəl

radical

能够带来根本性变化，反对传统的信仰或系统
Meaning
Capable of bringing fundamental changes opposite to conventional beliefs or systems.
Example
The leader proposed radical economic reforms.
领导人提议进行激进的经济改革。
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。
C2 noun /ˈrɛkwiəm/

requiem

安魂曲
Meaning
A mass, music, or ceremony for the repose of the souls of the dead.
Example
The choir performed a requiem in memory of the late leader.
合唱团为已故领导人表演了安魂曲。
C1 adjective rɪsk-ədˈʤɛstɪd

risk-adjusted

风险调整
Meaning
Modified or calibrated to account for risk factors in investment returns.
Example
Risk-adjusted returns consider both potential profit and loss.
风险调整后的回报同时考虑潜在的利润和损失。
C1 verb /rɪˈpiːl/

repeal

Meaning
To officially cancel or revoke a law or decision.
Example
The government decided to repeal the outdated law.
C2 adjective /ræpˈtɔːriəl/

raptorial

猛禽
Meaning
Relating to birds of prey or predatory behavior.
Example
The eagle is a raptorial bird with sharp talons.
鹰是一个猛禽，拥有锋利的爪子。
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。
B2 adjective /rɪˈnjuː.ə.bəl/

renewable

可再生
Meaning
Able to be renewed or replaced naturally; not depleted when used.
Example
Renewable resources minimize environmental damage.
可再生资源减少环境损害。
C2 noun /ˈræɡəmʌfɪn/

ragamuffin

破烂的孩子
Meaning
A person, typically a child, in ragged, dirty clothes.
Example
The little ragamuffin begged for food on the street.
那个小破烂的孩子在街上乞讨食物。
C1 verb /ˌriː.kənˈviːn/

reconvene

重新召开
Meaning
to gather or assemble again, especially for a meeting
Example
The committee will reconvene after lunch.
委员会将在午餐后重新召开。
B2 adverb /ˈræp.ɪd.li/

Rapidly

快速地; 迅速
Meaning
at a fast speed; quickly
Example
The company is rapidly expanding into new markets.
公司正在迅速拓展新市场。
C2 noun /ˈreɪləri/

raillery

友好的玩笑
Meaning
good-humored teasing or joking
Example
Their friendship was full of light-hearted raillery.
他们的友谊充满了轻松的玩笑。
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。
B1 adjective /roʊˈmæn.tɪk/

Romantic

浪漫的
Meaning
relating to love; idealistic; dreamy
Example
They enjoyed a romantic dinner by candlelight.
他们在烛光下享受浪漫的晚餐。
C1 verb /rɪˈsiːd/

recede

退去
Meaning
To move back or further away from a previous position.
Example
The floodwaters began to recede after the heavy rain stopped.
暴雨停止后，洪水开始退去。
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 /ˈraɪfəl/

Rifle

步枪
Meaning
a gun with a long barrel that is fired from the shoulder
Example
The soldier carried a rifle during the mission.
士兵在任务中携带着步枪。
B2 verb /ˌriːˈbɪld/

rebuild

重建
Meaning
to build something again after it has been damaged or destroyed
Example
The villagers worked together to rebuild the bridge after the flood.
村民们一起努力，在洪水后重建了桥梁。
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。
C1 adjective /rɪˈvɜː.sə.bəl/

Reversible

可逆的
Meaning
able to be turned the other way around; able to be undone or changed back
Example
This jacket is reversible and can be worn on both sides.
这件夹克是可翻面的，可以正反两面穿着。
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 /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。
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。
B2 verb /ˈrɛkən/

reckon

推测
Meaning
To think, believe, or expect something; to calculate or estimate.
Example
I reckon it will rain later today.
我猜今天稍后会下雨。
B1 verb /rɑːb/

rob

抢劫
Meaning
to steal money or property from a person or place; to commit robbery
Example
The thief tried to rob the bank last night.
小偷昨晚试图抢劫银行。
C2 adjective /ˈrɛstɪv/

restive

不安定的
Meaning
unable to stay still or silent; restless and impatient
Example
The crowd grew restive as they waited for the concert to begin.
人群在等待音乐会开始时变得不安定。
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。
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。
C1 verb /rɪˈmjuːnəreɪt/

remunerate

支付
Meaning
To pay someone for services or work done.
Example
The company will remunerate employees fairly for their overtime.
公司将公平地支付员工的加班费。
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。
B1 noun /ˌrɛzəˈluːʃən/

resolution

解决, 决议
Meaning
The action of solving a problem, dispute, or contentious matter.
Example
The resolution of the issue requires careful planning and action.
解决问题需要仔细的计划和行动。
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。
B1 noun /rɪˈzɔː.sɪz/

resources

资源
Meaning
A stock or supply of money, materials, staff, and other assets.
Example
The region was rich in herbal resources.
该地区富含草本资源。
B1 noun /rɪˈpleɪsmənt/

replacement

替代
Meaning
the act of substituting one thing or person for another
Example
She got a replacement for her damaged phone.
她为她损坏的手机找到了一个替代品。
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 verb /rɪˈfaɪn/

refine

改进
Meaning
to improve by making small changes; to purify
Example
The chef refines the recipe to perfection.
厨师将食谱完善到完美。
C1 verb /ˌriːˈtʌtʃ/

retouch

修饰
Meaning
To improve or repair a picture, photograph, or image by making small changes.
Example
The photographer retouched the image to remove blemishes.
摄影师对图片进行了修饰以去除瑕疵。
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 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.
C1 noun /ˈrɛzɪn/

resin

树脂
Meaning
a sticky organic substance, usually secreted by plants, often used in varnishes or plastics
Example
The craftsman used natural resin to make the sculpture shine.
工匠用天然树脂使雕塑闪闪发光。
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 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。
C1 verb /ˈrɪvɪt/

rivet

用铆钉固定 / 吸引注意
Meaning
to fasten or secure with a rivet; to hold someone’s attention firmly
Example
The craftsman riveted the metal plates together.
工匠用铆钉把金属板固定在一起。
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。
B2 noun /ˌrezəˈveɪʃən/

Reservation

预订
Meaning
the action of reserving something; an arrangement whereby something is reserved for a particular person; a qualification to an expression of agreement or approval
Example
I made a reservation at the restaurant for tonight.
我为今晚在餐厅做了一个预定。
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。
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 verb /rɪˈnaʊns/

renounce

放弃
Meaning
to formally declare rejection of something, such as a claim, belief, or way of life
Example
She renounced her citizenship to move abroad permanently.
她放弃了国籍以便永久定居国外。
C1 verb /ˌriːˈmɒdəl/

remodel

重新装修
Meaning
To change the structure or form of something, especially a building.
Example
They decided to remodel their kitchen last summer.
他们决定去年夏天重新装修厨房。
B1 adjective /ˈriː.zən.ə.bəl/

Reasonable

合理的; 公正且实用的; 不太贵; 合逻辑的
Meaning
fair and sensible; not too expensive; logical and practical
Example
The hotel offers reasonable prices for quality accommodation.
酒店提供合理的价格，以便提供优质的住宿。
C1 noun /ˌrev.əˈluː.ʃən.ər.i ˈbreɪk.θruː/

revolutionary breakthrough

革命性的突破
Meaning
A sudden, dramatic, and important discovery or development that changes everything.
Example
Robotic surgery is a revolutionary breakthrough in healthcare.
机器人手术是医疗领域的革命性突破。
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 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。
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。
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。
C2 verb /ˌriː.kəˈpɪtʃ.ə.leɪt/

recapitulate

概述
Meaning
To summarize and state again the main points of something.
Example
The teacher asked the student to recapitulate the lesson.
老师让学生复述这堂课。
B2 noun /rɪˈdʒɛkʃən/

rejection

拒绝
Meaning
the action of refusing or dismissing something or someone
Example
Her rejection of the offer surprised everyone.
她拒绝了这个提议，令所有人吃惊。
C1 noun ˌræʃ.ən.əl.ɪˈzeɪ.ʃən

rationalization

理性化
Meaning
The practice of finding reasons for behavior or actions that are not the real reasons.
Example
His rationalization of the mistake was not convincing.
他对错误的理性化并不令人信服。
C1 adjective /rɪˈsɛsɪv/

recessive

隐性
Meaning
In genetics, relating to a trait that is expressed only when two copies of the gene are present.
Example
Blue eye color is often a recessive trait.
蓝色眼睛的颜色通常是隐性特征。
C1 noun /ˈrɛtrəsˌpɛkt/

retrospect

回顾
Meaning
the act of looking back on or reviewing past events
Example
In retrospect, the decision seemed unwise.
回顾来看，那个决定似乎不明智。
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。
C1 noun /riˈæktənt/

reactant

Meaning
A substance that takes part in and undergoes change during a chemical reaction.
Example
Oxygen is a reactant in the process of combustion.
A1 noun, verb /rɛst/

rest

Meaning
to cease work or movement in order to relax or recover strength
Example
He needs to rest after the long journey.
C2 noun /ˈrɛkjʊzənt/

recusant

拒抗者
Meaning
a person who refuses to submit to authority or comply with rules
Example
The recusant opposed the new law.
拒抗者反对了新法律。
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 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 /ˌret.rəˈspek.tɪv/

Retrospective

回顾的
Meaning
looking back on or dealing with past events or situations
Example
The museum held a retrospective exhibition of the artist's work.
博物馆举办了这位艺术家的回顾展。
B2 noun /rɪˈlaɪ.əns/

Reliance

依赖
Meaning
the state of depending on something or someone for support or help
Example
His reliance on technology is concerning.
他对技术的依赖令人担忧。
C1 verb /rɪˈkaʊnt/

recount

叙述
Meaning
to narrate or tell the details of an event or experience
Example
She recounted her adventures during the summer trip.
她讲述了她在夏季旅行中的冒险。
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。
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。
B1 noun /ˈref.ər.əns/

Reference

参考资料
Meaning
the action of mentioning or alluding to something; a source of information
Example
Please provide references to support your research claims.
请提供参考资料以支持您的研究声明。