come up with
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idiom

come up with

想出一个计划、想法或解决方案
Meaning
to think of a plan, idea, or solution
Example
She managed to **come up with** a clever workaround overnight.
她成功地在一夜之间想出了一个巧妙的解决方法。
idiom

cut corners

以最简单或最便宜的方式做某事
Meaning
to do something in the easiest or cheapest way
Example
They **cut corners** to finish the project faster.
他们为了更快完成项目而走捷径。
idiom

cross your mind

短暂地想到某事
Meaning
to think of something briefly
Example
It never **crossed my mind** that he could lie.
我从没想到他会撒谎。
idiom

color outside the lines

以创造性和不拘一格的方式思考或行动
Meaning
to think or act creatively and unconventionally
Example
Good designers always **color outside the lines**.
优秀的设计师总是**超越界限**思考。
idiom

can't believe your eyes

惊讶到怀疑自己看到的东西
Meaning
to be so surprised that you doubt what you are seeing
Example
I **couldn’t believe my eyes** when I saw the snowfall.
当我看到雪花时，我简直不敢相信自己的眼睛。
idiom

carry through

尽管有困难仍然完成某事
Meaning
to complete something despite difficulties
Example
She promised to **carry through** with the training program.
她答应要**完成**培训项目。
idiom

clean up one’s act

改善行为或表现；变得更加负责任
Meaning
to improve behavior or performance; to become more responsible
Example
The factory had to **clean up its act** to avoid heavy fines.
工厂必须**改善行为**以避免重罚。
idiom

cut someone down to size

批评某人让他感到自己不重要
Meaning
to criticize someone to make them feel less important
Example
The manager **cut him down to size** after he bragged too much.
经理在他吹嘘过多后**把他给放下**了。
idiom

cutting corners

以最简单或最便宜的方式做事，通常会牺牲质量
Meaning
to do something in the easiest or cheapest way, often sacrificing quality
Example
They finished early by **cutting corners**, but the result was poor.
他们通过“走捷径”提前完成，但结果很差。
idiom

clickbait

旨在吸引注意并鼓励点击的标题或内容
Meaning
a headline or content designed to attract attention and encourage clicks
Example
That article title is pure **clickbait**.
那篇文章的标题完全是**点击诱饵**。
idiom

come back to earth

从兴奋或做白日梦中回到现实
Meaning
to return to reality after being excited or daydreaming
Example
After the vacation, it’s time to **come back to earth**.
假期后，应该是时候**回到现实**了。
idiom

cash in on

从某个情况中获利，通常很快
Meaning
to profit from a situation, often quickly
Example
Several startups tried to **cash in on** the sudden trend.
几个初创公司试图从突如其来的趋势中获利。
idiom

call on

请某人发言或做某事
Meaning
to request someone to speak or do something
Example
The teacher will **call on** you if you raise your hand.
如果你举手，老师会叫你发言。
idiom

come out clean

被证明无罪或免除指责。
Meaning
To be proven innocent or free from blame.
Example
After investigation, he **came out clean**.
经过调查后，他被证明是清白的。
idiom

Crossing the line

超出可接受或适当的界限
Meaning
To go beyond acceptable or proper boundaries.
Example
The diplomat was criticized for **crossing the line** in his comments about the host country.
外交官因在关于东道国的评论中**越过了界限**而受到批评。
idiom

carry the weight of responsibility

承担重要责任的负担
Meaning
to bear the burden of an important duty or obligation
Example
As a team leader, he has to **carry the weight of responsibility**.
作为团队领导，他必须**承担责任的重担**。
idiom

chart your own course

独立规划自己的道路或未来
Meaning
to plan your own path or future independently
Example
He decided to **chart his own course** and become an entrepreneur.
他决定**规划自己的道路**并成为企业家。
idiom

cream of the crop

一组中的最佳；最优选择
Meaning
the best of a group; the finest selection
Example
These students are the **cream of the crop**.
这些学生是**最棒的**。
idiom

cut and paste

用很小的变化复制某些东西
Meaning
to copy something with little change
Example
You can't just **cut and paste** ideas from others.
你不能只是从别人那里**剪切并粘贴**想法。
idiom

cut loose

自由地表现并享受自己
Meaning
to behave freely and enjoy oneself
Example
It’s the weekend—time to **cut loose**!
是周末了—是时候**放松**了！
idiom

call the shots

掌控决策，做出决定
Meaning
to be in charge and make decisions
Example
In this company, the manager **calls the shots**.
在这家公司，经理做出决策。
idiom

count on

依赖某人做某事
Meaning
to rely on or trust someone to do something
Example
You can always **count on** me.
你总是可以依赖我。
idiom

couch potato

一个花很多时间坐着看电视的人
Meaning
a person who spends a lot of time sitting and watching TV
Example
He’s such a **couch potato**, he never goes out or exercises.
他是一个 **couch potato**，他从不外出，也不做运动。
idiom

catfish someone

通过创建虚假的在线身份来欺骗某人
Meaning
to deceive someone by creating a fake online identity
Example
He was **catfished** by someone pretending to be a model.
他被某个假装是模特的人**欺骗**了。
idiom

carry a torch for someone

继续爱一个不爱你的人
Meaning
to continue loving someone who doesn’t love you back
Example
He’s still **carrying a torch for** his ex-girlfriend.
他仍然爱着他的前女友。
idiom

crack down on

采取严格措施停止某事
Meaning
to take strict action to stop something
Example
The city plans to **crack down on** illegal parking downtown.
城市计划对市中心的非法停车采取严格措施。
B2 idiom

close but no cigar

几乎正确或成功，但不完全
Meaning
Almost correct or successful but not quite
Example
He was close to winning the competition, but close but no cigar.
他差点赢得比赛，但最终还是没能成功。
idiom

Cogito, ergo sum

我思故我在。一个基本的哲学命题，声称思考的行为是证明个体存在的证据。
Meaning
I think, therefore I am. A fundamental philosophical proposition that asserts the act of thinking is proof of one's existence.
Example
René Descartes' famous phrase **Cogito, ergo sum** highlights the importance of self-awareness in understanding existence.
勒内·笛卡尔的名句 **科吉托, 埃尔戈 苏姆** 突出了自我意识在理解存在中的重要性。
idiom

call a truce

同意停止战斗或争论一段时间
Meaning
to agree to stop fighting or arguing for a while
Example
They decided to **call a truce** until the boss arrived.
他们决定在老板到达之前**停战**。
idiom

cross your heart

做出真诚的承诺
Meaning
to make a sincere promise
Example
I’ll never tell anyone, **cross my heart**.
我永远不会告诉任何人，**我发誓**。
idiom

chin up, soldier

在困难的情况下保持勇敢和坚强
Meaning
to stay brave and strong in difficult situations
Example
**Chin up, soldier**, things will get better soon.
**振作起来，士兵**，一切很快就会好起来。
idiom

Cross one’s mind

突然想到某事。
Meaning
To suddenly think of something.
Example
It never **crossed my mind** that he could be lying.
我从未**想过**他可能在撒谎。
idiom

cold feet

对某事感到紧张或犹豫不决
Meaning
to feel nervous or hesitant about something
Example
He got **cold feet** before proposing to her.
在向她求婚之前，他感到犹豫不决。
idiom

Cut class

未经允许逃课
Meaning
To skip a class without permission
Example
He **cut class** to watch a movie.
他逃课去看电影了。
idiom

cut your teeth

在特定领域或工作中获得初步经验
Meaning
to gain initial experience in a particular area or job
Example
He **cut his teeth** in the banking industry before starting his own firm.
在创办自己的公司之前，他在银行业获得了初步经验。
idiom

crazy about someone

深深地被某人吸引或迷住
Meaning
to be deeply attracted or infatuated with someone
Example
She’s **crazy about** her new boyfriend.
她对她的新男朋友**疯狂**。
idiom

cop a plea

为了避免更严厉的惩罚，承认较轻的罪名
Meaning
to plead guilty to a lesser charge in order to avoid a more severe penalty
Example
He decided to **cop a plea** and serve a shorter sentence.
他决定认罪并服较短的刑期。
idiom

content is king

高质量的内容是在线成功的最重要因素
Meaning
high-quality content is the most important factor for success online
Example
Never forget that **content is king** in digital marketing.
永远不要忘记，在数字营销中，**内容就是王者**。
idiom

cover story

杂志或报纸封面的主要故事
Meaning
the main story on the front of a magazine or newspaper
Example
Her interview became the **cover story** of the week.
她的采访成为了本周的封面故事。
idiom

carve up

将某物分成部分
Meaning
to divide something into parts
Example
Let’s **carve up** the timeline into manageable phases.
我们把时间线划分为可管理的阶段。
idiom

cut above the rest

比别人更好
Meaning
to be better than others
Example
His presentation was **a cut above the rest**.
他的演讲比别人更好。
idiom

code the future

创造塑造未来技术的创新
Meaning
to create innovations that shape future technology
Example
AI researchers are working hard to **code the future**.
人工智能研究人员正在努力**编写未来的代码**。
idiom

crossing the aisle

当一个政治家支持或投票支持对立党派时
Meaning
when a politician supports or votes for the opposite party
Example
She surprised everyone by **crossing the aisle** to support the bill.
她通过走过通道来支持该法案，令大家惊讶
idiom

copycat

模仿另一个人的人
Meaning
someone who imitates another person
Example
She’s such a **copycat**, always doing what I do.
她是个**copycat**，总是做我做的事。
idiom

come to the rescue

帮助陷入困境的人
Meaning
to help someone in trouble
Example
A firefighter **came to the rescue** of the trapped cat.
一名消防员**来救援**被困的猫。
idiom

close the book on something

停止处理或思考某事
Meaning
to stop dealing with or thinking about something
Example
After years of conflict, they finally **closed the book on** their rivalry.
经过多年的冲突，他们终于**结束了**彼此的对立。
idiom

come to terms with

在经过一些谈判后达成协议或接受一种情况
Meaning
to reach an agreement or accept a situation after some negotiation
Example
It took some time, but eventually we **came to terms with** the new policy.
这花了一些时间，但最终我们**接受了**新政策。
idiom

cross that bridge when you come to it

等问题发生时再处理，不要提前
Meaning
to deal with a problem when it happens, not before
Example
We will **cross that bridge when we come to it**.
等到了那一步我们再说。
idiom

cool as a cucumber

非常冷静和镇定
Meaning
very calm and composed
Example
He stayed **cool as a cucumber** during the meeting.
他在会议期间保持非常冷静。
idiom

cutting-edge technology

最先进和创新的可用技术
Meaning
the most advanced and innovative technology available
Example
Our startup uses **cutting-edge technology** to solve complex problems.
我们的初创公司使用**前沿技术**解决复杂的问题。
idiom

cross the aisle

与对立政治党派的成员合作
Meaning
to cooperate with members of the opposing political party
Example
He often **crosses the aisle** to work on bipartisan issues.
他经常**穿过过道**与对方党派合作处理两党问题。
idiom

confide in someone

相信某人，足够信任到可以告诉他们秘密
Meaning
to trust someone enough to tell them secrets
Example
She only **confides in** her best friend.
她只会向她最好的朋友吐露心事。
idiom

cost an arm and a leg

非常昂贵
Meaning
to be very expensive
Example
That designer bag **cost an arm and a leg**.
那个设计师包包**非常昂贵**。
idiom

come straight to the point

直接而诚实，不浪费时间
Meaning
to be direct and honest without wasting time
Example
Please **come straight to the point** and tell me what happened.
请直接了当告诉我发生了什么。
idiom

cut someone some slack

不那么批评或给某人喘息的机会
Meaning
to be less critical or give someone a break
Example
You should **cut him some slack**—he’s having a tough day.
你应该**宽容他一点**—他今天过得很艰难。
idiom

cold fish

一个没有情感或缺乏温暖的人
Meaning
a person who is unemotional or lacks warmth
Example
He’s such a **cold fish**; he never shows his feelings.
他真是个**冷血的家伙**；他从不表现自己的感受。
idiom

cut both ways

既有积极的一面，也有消极的一面
Meaning
to have both positive and negative effects
Example
Working from home **cuts both ways** – you save time but lose social interaction.
在家工作**有利也有弊**——节省时间，但失去了社交互动。
idiom

chalk up

将某事归因于特定原因
Meaning
to attribute something to a particular cause
Example
Let’s **chalk up** the delay to bad weather.
让我们把延误归因于坏天气。
idiom

Culture shock

遇到不同文化时的困惑感
Meaning
A feeling of confusion when encountering a different culture
Example
Moving to Japan gave her a bit of **culture shock** at first.
搬到日本让她刚开始时感到有点 **文化冲击**。
idiom

chase your dreams

积极努力实现你的雄心
Meaning
to actively try to achieve your ambitions
Example
You should always **chase your dreams** no matter how hard it seems.
无论多么困难，你都应该始终**追求你的梦想**。
idiom

cut and paste solution

一个简单或没有创意的解决办法；复制的方法
Meaning
an easy or unoriginal fix; a copied approach
Example
That’s just a **cut and paste solution**, not a real fix.
那只是一个复制粘贴的解决方案，不是真正的解决办法。
idiom

cover up

掩盖某事的真相
Meaning
to hide the truth about something
Example
They tried to **cover up** the mistake.
他们试图掩盖这个错误。
idiom

come down hard on

严厉地惩罚或批评某人
Meaning
to punish or criticize someone severely
Example
The company **came down hard on** employees who broke the rules.
公司严厉地惩罚了违反规则的员工。
idiom

chicken out

因为害怕而决定不做某事
Meaning
to decide not to do something because of fear
Example
He was going to ask her out but **chickened out** at the last minute.
他本来要约她出去，但在最后一刻**临阵退缩**了。
idiom

come full circle

经历一系列变化后回到原来的状态
Meaning
to return to the original state after a series of changes
Example
After years abroad, she’s **come full circle** and moved back home.
在国外多年后，她回到了原点并搬回了家。
idiom

Cut your losses

停止做不再有利可图的事情。
Meaning
To stop doing something that is no longer profitable.
Example
It’s better to **cut your losses** and move on.
最好**止损**并继续前进。
idiom

carry on about

激动或恼火地长时间讲述
Meaning
to speak at length in an excited or annoyed way
Example
He kept **carrying on about** the missed deadline all morning.
他整整一早上都在**讲述**错过的最后期限。
idiom

caught between a rock and a hard place

进退两难
Meaning
in a difficult situation where any choice you make will have negative consequences
Example
I'm **caught between a rock and a hard place** - both options are terrible.
我进退两难，两个选择都很糟糕。
idiom

call a spade a spade

诚实直接地说话，即使它令人不悦
Meaning
to speak honestly and directly, even if it’s unpleasant
Example
She always **calls a spade a spade**, no matter who gets offended.
她总是直言不讳，不管谁生气。
idiom

cut the mustard

表现得好或符合期望
Meaning
to perform well or meet expectations
Example
She didn’t **cut the mustard** in her new role.
她在新角色中没有**切黄芥末**。
idiom

change your tune

改变你的意见或态度
Meaning
to change your opinion or attitude
Example
He criticized the plan at first but later **changed his tune**.
一开始他批评了这个计划，但后来他改变了看法。
idiom

circle around

围绕某物反复移动
Meaning
to move repeatedly around something
Example
The hawk kept **circling around** above the trees.
老鹰不停地在树木上空**盘旋**。
idiom

cover your tracks

隐藏一个人行为的证据
Meaning
to hide evidence of one’s actions
Example
Hackers often **cover their tracks** after breaking into systems.
黑客在进入系统后常常**掩盖他们的痕迹**。
idiom

code like a machine

在编程中极快且高效地工作
Meaning
to work extremely fast and efficiently on programming
Example
She can **code like a machine** when a deadline is near.
当截止日期临近时，她可以**像机器一样编程**。
idiom

Change is the only constant

生活中的一切都在不断变化；没有什么保持不变。
Meaning
Everything in life keeps changing; nothing stays the same.
Example
Don’t resist — change is the only constant.
不要抵抗 — 变化是唯一不变的。
idiom

crack under pressure

在压力下失去控制或失败
Meaning
to lose control or fail when under stress
Example
Some people **crack under pressure**, while others thrive.
有些人在压力下崩溃，而其他人则茁壮成长。
idiom

cut somebody some slack

因为某人此刻有问题，不像通常那样严厉批评他们
Meaning
to not judge someone as severely as you usually would because they are having problems at the present time
Example
He's been under a lot of stress lately, so let's **cut him some slack**.
他最近压力很大，我们给他一些喘息的时间
idiom

Catwalk queen

一个非常自信又时尚的女人，就像模特一样
Meaning
A woman who is very confident and stylish, like a model
Example
She walked into the room like a **catwalk queen**.
她走进房间，像一个T台女王。
idiom

cry one’s heart out

因悲伤而痛哭
Meaning
to cry very hard due to sadness
Example
She **cried her heart out** after the breakup.
她在分手后痛哭流涕。
idiom

Crooked as a snake

不诚实或不可靠
Meaning
Dishonest or untrustworthy.
Example
Everyone knows that politician is **crooked as a snake**.
大家都知道那位政治家是**像蛇一样不诚实**。
idiom

call the tune

掌控; 做出重要决定
Meaning
to be in control; to make important decisions
Example
In this company, the investors **call the tune**.
在这家公司，投资者做出重要决策。
idiom

check back in

稍后再次联系以获取更新
Meaning
to reconnect later to get an update
Example
Let’s **check back in** next week on the prototype.
我们下周再检查原型。
idiom

cover all the angles

从各个角度审视一个故事或问题
Meaning
to examine a story or issue from every perspective
Example
The journalist tried to **cover all the angles** before publishing the article.
记者在发布文章之前尽力**涵盖所有角度**。
idiom

cutting-edge marketing

使用最新和最先进的营销技术
Meaning
using the latest and most advanced marketing techniques
Example
Our company invests in **cutting-edge marketing** strategies.
我们的公司投资于前沿营销策略。
idiom

check in with

与某人联系以交流最新情况
Meaning
to contact someone to exchange updates
Example
I’ll **check in with** the vendor later today.
我今天晚些时候会与供应商联系。
idiom

carry the weight of the world

承担大量责任
Meaning
to take on a lot of responsibility
Example
John felt like he had to **carry the weight of the world** on his shoulders at work.
John 觉得他在工作中必须 **carry the weight of the world**。
idiom

chip in for

为共同费用出钱
Meaning
to contribute money toward a shared cost
Example
Everyone agreed to **chip in for** a farewell cake.
每个人都同意为告别蛋糕出钱。
idiom

cry a river

哭很多或表现出极度的悲伤
Meaning
to cry a lot or show extreme sadness
Example
He **cried a river** after hearing the news.
他听到消息后哭了很多。
idiom

come rain or shine

不管发生什么；无论天气或情况如何
Meaning
no matter what happens; in any weather or situation
Example
He goes jogging **come rain or shine**.
无论晴天还是雨天，他都会去跑步。
idiom

cast in stone

固定且不可更改
Meaning
fixed and unchangeable
Example
The script isn’t **cast in stone**; we can make changes.
剧本不是**cast in stone**; 我们可以进行更改。
idiom

comic relief

在严肃情境中的一个有趣时刻
Meaning
a funny moment in a serious situation
Example
The movie’s sidekick provided much-needed **comic relief**.
电影中的配角提供了一个非常需要的喜剧缓解。
idiom

clash of civilizations

不同文化、宗教或文明群体之间的冲突
Meaning
the conflict between different cultural, religious, or civilizational groups
Example
The debate about cultural differences is often seen as a **clash of civilizations**.
关于文化差异的辩论常被视为一次**文明的冲突**。
idiom

Cross my heart

我真诚地发誓或承诺。
Meaning
I swear or promise sincerely.
Example
I will help you, **cross my heart**.
我会帮你，**kruosi mai hat**。
idiom

call the bluff

挑战某人证明他们的权威或主张
Meaning
to challenge someone to prove their authority or claim
Example
She **called his bluff** when he threatened to quit.
当他威胁辞职时，她揭穿了他的虚张声势。
idiom

come to light

浮出水面；变得为人所知或被揭示
Meaning
to become known or revealed
Example
The truth finally **came to light** after many years.
真相在多年后终于**浮出水面**。
idiom

come clean

告诉隐藏的事情的真相
Meaning
to tell the truth about something you have been hiding
Example
He finally **came clean** about what happened.
他终于坦白了发生了什么。
idiom

change your mind

决定与之前不同的事情
Meaning
to decide something different from before
Example
She **changed her mind** about going to the party.
她**改变了主意**不去参加聚会。
idiom

carry out one's duties

执行分配给自己的任务或责任
Meaning
to perform one's assigned tasks or responsibilities
Example
He always **carries out his duties** with honesty and dedication.
他总是以诚实和奉献精神完成自己的职责。
idiom

come out of one's shell

变得更外向或更自信
Meaning
to become more outgoing or confident
Example
She used to be shy, but now she has finally **come out of her shell**.
她以前很害羞，但现在她终于**走出了她的壳**。
idiom

clear the decks

通过移除不必要的事物来为行动做准备。
Meaning
Prepare for action by removing unnecessary things.
Example
We need to **clear the decks** before the new project begins.
我们需要在新项目开始之前**clear the decks**。
idiom

chill out

放松并停止生气或紧张
Meaning
to relax and stop being angry or nervous
Example
You need to **chill out** and enjoy the weekend.
你需要放松并享受周末。
idiom

chapter and verse

提供关于某事的完整和准确细节
Meaning
to provide full and exact details about something
Example
She can quote **chapter and verse** to support her argument.
她可以引用**chapter and verse**来支持她的论点。
idiom

clean up your act

开始更负责任地行为。
Meaning
to start behaving more responsibly.
Example
You need to **clean up your act** if you want that promotion.
如果你想要那个晋升，你需要**clean up your act**。
idiom

catch up

在很长一段时间后见面并交谈; 达到与某人相同的水平
Meaning
to meet and talk after a long time; to reach the same level as someone
Example
Let’s **catch up** over coffee this weekend.
这个周末我们一起喝咖啡聊聊。
idiom

call to action

一种鼓励观众立即回应的提示
Meaning
a prompt that encourages an immediate response from an audience
Example
Your ad must include a strong **call to action**.
您的广告必须包含一个强有力的 **行动号召**。
idiom

carry the can

接受责任或指责，通常是不公平的。
Meaning
to accept responsibility or blame, often unfairly.
Example
She was left to **carry the can** after her manager left.
经理离开后，她不得不 **承担责任**。
idiom

cut to the chase

迅速进入正题
Meaning
to get to the point quickly
Example
Let’s **cut to the chase** and discuss the main issue.
让我们直接进入正题，讨论主要问题。
idiom

clash of wills

两个决心坚定的人之间的冲突
Meaning
a conflict between two determined people
Example
It was a **clash of wills** between the manager and the employee.
这是经理和员工之间的**克拉什 夫 威尔斯**。
idiom

check up on

确认某人或某事是否一切顺利
Meaning
to verify that someone or something is doing well
Example
I’ll **check up on** the interns after the training session.
我将在训练结束后检查实习生。
idiom

Cultural melting pot

不同文化融合的地方
Meaning
A place where different cultures blend together
Example
New York is often described as a **cultural melting pot**.
纽约常被描述为一个**文化大熔炉**。
idiom

crime doesn't pay

做错事或非法行为永远无法带来真正的成功
Meaning
doing wrong or illegal things will never bring true success
Example
He learned the hard way that **crime doesn't pay**.
他通过艰难的方式学到了，**犯罪不会带来收益**。
idiom

catch some z’s

睡一会儿
Meaning
to get some sleep
Example
I need to **catch some z’s** before the meeting.
我需要在会议前睡一会儿。
idiom

Calm before the storm

暴风雨前的平静。
Meaning
A peaceful time before trouble or chaos starts.
Example
The office is quiet now, but it’s just **the calm before the storm**.
现在办公室很安静，但这只是暴风雨前的平静。
idiom

cross the bridge when you come to it

不要在事情发生之前担心
Meaning
to not worry about something until it happens
Example
We’ll **cross the bridge when we come to it**.
我们到时候再说。
idiom

catch the train

准时赶上火车或事件
Meaning
to be on time for a train or event
Example
Hurry up or you’ll not **catch the train**!
快点，否则你会错过火车！
idiom

crossed wires

两个人之间的误会
Meaning
a misunderstanding between two people
Example
We must have **crossed wires** about the meeting time.
我们可能在会议时间上产生了误会。
idiom

caught off guard

被某些意外事情惊讶或震惊
Meaning
surprised or shocked by something unexpected
Example
She was **caught off guard** by the sudden question.
她被突如其来的问题吓了一跳。
idiom

Caesar’s wife must be above suspicion

处于信任位置的人必须毫无过错嫌疑。
Meaning
A person in a position of trust must be beyond any hint of wrongdoing.
Example
A judge should remember that **Caesar’s wife must be above suspicion**.
法官应记住，凯撒的妻子必须无可指责。
idiom

crack the books

打开书本并开始学习
Meaning
to open your books and begin studying
Example
It's time to **crack the books** and prepare for finals.
是时候打开书本并为期末考试做准备。
idiom

Cross the Rubicon

做出不可逆转的决定或采取无法回头的一步。
Meaning
To make an irreversible decision or take a step from which there is no turning back.
Example
By quitting his job, he **crossed the Rubicon** and committed to his startup dream.
辞去工作后，他跨越了鲁比孔河，全心投入自己的创业梦想。
idiom

clamp down

采取强硬措施来制止某事
Meaning
to take strong action to stop something
Example
The manager decided to **clamp down** on late arrivals.
经理决定对迟到的人采取严格措施。