lay down the law
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idiom

lay down the law

明确而坚定地声明规则
Meaning
to state rules firmly and clearly
Example
The manager **laid down the law** about punctuality.
经理对准时问题明确规定了规则。
idiom

easy come, easy go

轻松赚来的钱轻松失去
Meaning
money that is easily earned is easily lost
Example
He lost all his winnings in a day—**easy come, easy go**.
他在一天之内失去了所有的奖金——轻松来，轻松去
idiom

diplomatic immunity

给予外交官免于起诉的法律保护
Meaning
legal protection given to diplomats from prosecution
Example
He could not be arrested because he had **diplomatic immunity**.
他不能被逮捕，因为他有**外交豁免权**。
idiom

pivot to success

为了取得成功而战略性地改变方向
Meaning
to change direction strategically to achieve success
Example
The company had to **pivot to success** after its first product failed.
公司在第一个产品失败后，不得不**为了取得成功而改变方向**。
idiom

Money doesn't grow on trees

钱是有限的，必须通过努力赚取；并不容易得到。
Meaning
Money is limited and must be earned; not easy to get.
Example
You should save more—**money doesn’t grow on trees**.
你应该存更多的钱—**钱不是从树上长出来的**。
idiom

quote chapter and verse

准确或详细地引用某事
Meaning
to cite something exactly or in great detail
Example
She can **quote chapter and verse** from Shakespeare.
她能准确地引用莎士比亚的句子。
idiom

knock someone for six

极大地震惊或使某人烦恼
Meaning
to shock or upset someone greatly
Example
The sudden loss **knocked him for six**.
突如其来的损失 **让他震惊**。
idiom

take by surprise

突然让某人感到吃惊
Meaning
to catch someone off guard; to surprise unexpectedly
Example
The sudden rain **took us by surprise**.
突如其来的雨**让我们感到惊讶**。
idiom

keep a straight face

在有趣的情况下避免笑出声
Meaning
to avoid laughing in a funny situation
Example
It was hard to **keep a straight face** during his silly speech.
在他愚蠢的演讲过程中，很难保持严肃的表情。
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

live up to expectations

履行对你的期望
Meaning
to fulfill what is expected of you
Example
He worked hard to **live up to expectations**.
他努力工作以达到期望。
idiom

play the political card

利用政治议题为自己谋取利益
Meaning
to use a political issue to one’s advantage
Example
The minister tried to **play the political card** to gain public sympathy.
部长试图**打政治牌**以获得公众的同情。
idiom

cash cow

一种持续带来大量收入的产品或服务
Meaning
a product or service that consistently generates a lot of money
Example
Their mobile app has become a **cash cow** for the company.
他们的移动应用程序已成为公司的摇钱树。
idiom

blow hot and cold

不断改变你的态度或情绪
Meaning
to keep changing your attitude or mood
Example
He’s **blowing hot and cold** about the new project.
他对这个新项目态度不断变化。
idiom

media circus

过度或耸人听闻的媒体报道
Meaning
an excessive or sensationalized media coverage
Example
The trial turned into a **media circus**.
审判变成了一个**媒体马戏团**。
idiom

Put our heads together

一起讨论并共同找到解决办法。
Meaning
To discuss and find a solution collectively.
Example
Let’s **put our heads together** and come up with a plan.
让我们一起想办法并制定一个计划。
idiom

line up with

与某物匹配或同意
Meaning
to match or agree with something
Example
These metrics **line up with** our targets.
这些指标**与**我们的目标一致。
idiom

Pour your heart out

诚实地表达所有的感受。
Meaning
To express all your feelings honestly.
Example
She **poured her heart out** to her best friend.
她对她最好的朋友倾诉了所有的心里话。
idiom

put your foot in your mouth

说一些尴尬或不合适的话
Meaning
to say something embarrassing or inappropriate
Example
He really **put his foot in his mouth** when he mentioned her age.
当他提到她的年龄时，他真的**说错话了**。
idiom

lose your cool

变得生气或失去耐心
Meaning
to become angry or impatient
Example
Don’t **lose your cool**; the situation will get better.
不要失去冷静; 情况会好转。
idiom

behind closed doors

私下里; 秘密地
Meaning
in private; secretly
Example
The deal was made **behind closed doors**.
交易是在闭门造车的情况下达成的。
idiom

Put the pedal to the metal

付出更大的努力，并更加努力地工作。
Meaning
To push harder and make a greater effort.
Example
We need to **put the pedal to the metal** if we want to meet the deadline.
如果我们想按时完成，我们需要**把油门踩到底**。
idiom

trickle-down economics

一种经济理论，认为有利于富人的政策最终通过创造就业和增长会惠及所有人
Meaning
an economic theory that suggests that policies benefiting the wealthy will eventually benefit everyone by creating jobs and growth
Example
Critics argue that **trickle-down economics** has failed to provide substantial benefits for the poor.
批评者认为，**trickle-down economics**未能为贫困者提供实质性利益。
idiom

to be in the spotlight

获得大量的公众关注
Meaning
to receive a lot of public attention
Example
The artist has been **in the spotlight** since her latest exhibition.
自从她最近的展览以来，艺术家一直处于**聚光灯下**。
idiom

get the picture

理解情况
Meaning
to understand the situation
Example
After a few minutes, I started to **get the picture**.
几分钟后，我开始理解情况。
idiom

make the grade

达到期望的标准或水平
Meaning
to reach the desired standard or level
Example
Only a few students **made the grade** in the final test.
只有少数学生在期末考试中达到了要求的水平。
idiom

play one's cards right

做出正确的决定以获得好的结果
Meaning
to make the right decisions in order to achieve a good result
Example
If you **play your cards right**, you could get the promotion you want.
如果你**打好你的牌**，你就能获得你想要的升职。
idiom

motivate the team

鼓励并激励你的团队更加努力工作并实现目标
Meaning
to encourage and inspire your team to work harder and achieve goals
Example
As a manager, one of my primary goals is to **motivate the team** to reach their highest potential.
作为经理，我的主要目标之一是**激励团队**发挥他们的最大潜力。
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

balance of trade

一个国家的出口和进口之间的差异
Meaning
the difference between a country's exports and imports
Example
A negative **balance of trade** can weaken a nation's currency.
负的贸易平衡可能削弱一个国家的货币
idiom

training the model

通过提供数据教人工智能系统如何进行预测
Meaning
to teach an AI system how to make predictions by feeding it data
Example
We spent weeks **training the model** before deployment.
我们花了几周时间在部署前**训练模型**。
idiom

make friends

交朋友
Meaning
to form new friendships
Example
It’s easy to **make friends** when you’re kind to others.
当你对别人友善时，很容易**交朋友**。
idiom

machine learning fairness

确保机器学习模型做出公正、公平决策的概念。
Meaning
the concept of ensuring that machine learning models make unbiased, equitable decisions.
Example
The research team focused on improving **machine learning fairness** to eliminate discrimination.
研究小组专注于改进**机器学习公平性**以消除歧视。
idiom

Break with tradition

做事与通常方式不同
Meaning
To do something in a different way from what is usually done
Example
The couple decided to **break with tradition** and have a small wedding on the beach.
这对情侣决定打破传统，在海滩举行小型婚礼。
idiom

lay off

因缺乏工作或资金而解雇某人
Meaning
to dismiss someone from a job due to lack of work or money
Example
The company hopes to avoid having to **lay off** employees.
公司希望避免不得不解雇员工。
idiom

keep moving forward

尽管有障碍或挫折，也要继续前进
Meaning
to continue progressing despite obstacles or setbacks
Example
No matter what happens, always **keep moving forward**.
无论发生什么，都要继续前进。
idiom

grow by leaps and bounds

快速增长或改善
Meaning
to grow or improve very quickly
Example
The company has **grown by leaps and bounds** in the last year.
公司在去年取得了飞速的发展。
idiom

tiger mom

一位严格的母亲，她推动孩子们达到高标准
Meaning
a strict mother who pushes her children to achieve high standards
Example
Her friends call her a **tiger mom** because she’s very demanding.
她的朋友们称她为**老虎妈妈**，因为她要求很高。
idiom

hit the dance floor

开始跳舞，尤其是在派对上
Meaning
to start dancing, especially at a party
Example
Let’s **hit the dance floor** and show our moves!
让我们上舞池并展示我们的舞蹈！
idiom

chip in

为共同的目标贡献金钱或努力
Meaning
to contribute money or effort to a shared goal
Example
Everyone agreed to **chip in** for Maya’s farewell gift.
大家一致同意为玛雅的告别礼物出钱。
idiom

have nerves of steel

在压力下非常勇敢和冷静
Meaning
to be very brave and calm under pressure
Example
A firefighter must **have nerves of steel** to face danger every day.
消防员必须有钢铁般的神经才能每天面对危险
idiom

leave no stone unturned

为实现目标而做一切可能的事情
Meaning
to do everything possible to achieve a goal
Example
The police **left no stone unturned** in their search for the missing child.
警方在寻找失踪儿童时**不遗余力**。
idiom

Hot off the press

新印刷的; 非常新的新闻
Meaning
Newly printed; very recent news
Example
The report was **hot off the press**, released just minutes ago.
报告刚刚印刷出来，几分钟前发布了。
idiom

self-assured

自信
Meaning
confident and sure of oneself
Example
She walked into the room looking calm and **self-assured**.
她走进房间，看起来冷静且自信。
idiom

riding the wave

利用当前的趋势或成功
Meaning
taking advantage of a current trend or success
Example
The company is **riding the wave** of its recent success in the international market.
该公司正在利用其在国际市场上的近期成功。
idiom

cold case

一宗长时间未解决的刑事案件
Meaning
a criminal case that has not been solved for a long time
Example
The detective reopened a **cold case** from 1999.
侦探重新开启了1999年的**冷案**。
idiom

a blessing in disguise

看起来不好的事情但结果很好
Meaning
something that seems bad but results in something good
Example
Losing that job was **a blessing in disguise**.
失去那份工作是因祸得福。
idiom

in good spirits

心情愉快且充满信心
Meaning
to be cheerful and confident
Example
She was **in good spirits** after her presentation.
她在演讲后心情愉快且充满信心。
idiom

Put your best foot forward

尽全力
Meaning
to try as hard as you can
Example
She **put her best foot forward** in the interview.
她在面试中**尽最大努力**。
idiom

go out of one’s way

为帮助某人做出特别的努力
Meaning
to make a special effort to help someone
Example
She **went out of her way** to make sure we felt welcome.
她**走出她的路**来确保我们感到受欢迎。
idiom

paint the town red

出去并疯狂庆祝
Meaning
to go out and celebrate wildly
Example
After the exam, we decided to **paint the town red**.
考试后，我们决定**paint the town red**。
idiom

kick off

开始一个事件或活动
Meaning
to start an event or activity
Example
The workshop will **kick off** at 9 a.m. sharp.
研讨会将在上午9点准时开始。
idiom

keep the home fires burning

在别人不在时维持幸福的家
Meaning
to maintain a happy home while others are away
Example
While her husband was abroad, she **kept the home fires burning**.
当她丈夫在国外时，她**保持了家的温暖**。
idiom

robotic process automation

使用人工智能自动化业务流程
Meaning
the use of AI to automate business processes
Example
Companies are embracing **robotic process automation** to reduce costs.
公司正在采用**机器人过程自动化**来降低成本。
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

talk shop

在休闲时间谈论工作或生意
Meaning
to talk about work or business during leisure time
Example
Even at dinner, they started to **talk shop**.
即使在晚餐时，他们也开始**谈生意**。
idiom

guide the way

引导某人完成一个过程或路径
Meaning
to lead someone through a process or path
Example
A good leader knows how to **guide the way** for their team to succeed.
一个好领导知道如何**引导道路**让团队获得成功。
idiom

smoke-filled room

一个权势人物秘密做决定的地方
Meaning
a place where powerful people make decisions secretly
Example
The new policy was decided in a **smoke-filled room** by senior officials.
新政策是在**烟雾弥漫的房间**中由高级官员决定的。
idiom

robotic response

无感情或机械的反应
Meaning
an emotionless or mechanical reaction
Example
She gave a **robotic response** during the interview.
她在面试中给出了一个机械反应。
idiom

a pipe dream

一个不现实或不可能的梦想
Meaning
an unrealistic or impossible dream
Example
Owning a private island is just **a pipe dream** for most people.
拥有一个私人岛屿对大多数人来说只是 **一个不现实的梦想**。
idiom

never say never

鼓励某人保持希望并且不放弃
Meaning
to encourage someone to stay hopeful and not give up
Example
**Never say never**—you might succeed next time.
**永不放弃**—你下次可能会成功。
idiom

mutton dressed as lamb

一位年长的人试图看起来更年轻
Meaning
an older person trying to look younger
Example
People laughed when she wore teenage clothes — they said she was **mutton dressed as lamb**.
当她穿上青少年衣服时，人们笑了——他们说她是**mutton dressed as lamb**。
idiom

break free

摆脱控制或限制
Meaning
to escape from control or restriction
Example
She wanted to **break free** from her routine life.
她想要摆脱日常生活的束缚。
idiom

get to the bottom of it

找出事情的真正原因或根源
Meaning
to find the real reason or cause of something
Example
Let’s **get to the bottom of it** before making any decision.
在做任何决定之前，让我们先找出事情的真正原因。
idiom

patch things up

在争吵后修复关系
Meaning
to repair a relationship after a disagreement
Example
They finally **patched things up** after their fight.
他们终于在争吵后**和好了**。
idiom

To go the extra mile

付出比预期更多的努力
Meaning
To put in more effort than is expected
Example
He always goes the extra mile to help his friends.
他总是付出额外的努力去帮助他的朋友。
idiom

hit a snag

遇到意外问题或障碍
Meaning
to face an unexpected problem or obstacle
Example
The project **hit a snag** when the server went down.
当服务器宕机时，项目**hit a snag**。
idiom

shop till you drop

购物很长时间直到你累了
Meaning
to go shopping for a long time until you are tired
Example
My sister loves to **shop till she drops** during sales.
我姐姐喜欢在打折时购物到筋疲力尽。
idiom

take apart

把某物拆解成碎片
Meaning
to disassemble something into pieces
Example
We had to **take apart** the desk to move it upstairs.
我们必须把桌子拆解才能把它搬到楼上。
idiom

step change

显著的改进或转变
Meaning
a significant improvement or shift
Example
This marks a **step change** in how we approach innovation.
这标志着我们在创新方式上的一个**重大转变**。
idiom

Throw down the gauntlet

挑战某人打架或竞争。
Meaning
To challenge someone to fight or compete.
Example
He **threw down the gauntlet** by questioning his opponent’s honesty.
他通过质疑对手的诚实来抛出了挑战。
idiom

measure out

计算并分出特定的数量
Meaning
to calculate and separate a specific amount
Example
Please **measure out** two cups of flour.
请量出两杯面粉。
idiom

break the internet

在网上引起大量关注和讨论
Meaning
to cause an enormous amount of attention and discussion online
Example
The celebrity's new photo **broke the internet**.
这位名人的新照片**打破了互联网**。
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

a friend in need is a friend indeed

真正的朋友是在困难时帮助你的人
Meaning
a true friend helps you in difficult times
Example
When I was sick, Jane took care of me—**a friend in need is a friend indeed**.
我生病时，简照顾了我——患难见真情。
idiom

join the dots

将信息片段连接起来以理解完整的画面
Meaning
to connect pieces of information to understand the full picture
Example
AI systems can **join the dots** faster than humans when analyzing data.
AI 系统在分析数据时比人类更快地 **join the dots**。
idiom

love at first sight

一见钟情
Meaning
to fall in love immediately after meeting someone for the first time
Example
It was **love at first sight** when they met in college.
他们在大学见面时，这就是**一见钟情**。
idiom

in the wrong

对错误或糟糕情况负责。
Meaning
to be responsible for a mistake or bad situation.
Example
He knew he was **in the wrong** for shouting at her.
他知道大声对她喊是他的错。
idiom

keep your chin up

在困难的情况下保持积极，并且不要失去希望
Meaning
to stay positive and not lose hope in difficult situations
Example
**Keep your chin up**; things will get better soon.
抬起头来；事情很快就会好起来。
idiom

A watched pot never boils

当你等待某事时，时间感觉更长。
Meaning
Time feels longer when you are waiting for something.
Example
Don't keep looking at the clock; **a watched pot never boils**.
不要一直看着钟；**被盯着的壶永远不会开**。
idiom

go bananas over something

对某事变得非常兴奋或热情
Meaning
to become extremely excited or enthusiastic about something
Example
Kids **go bananas over** the new video game console.
孩子们对新的电子游戏机兴奋得不得了。
idiom

Wait for the dust to settle

等到情况变得清晰或平静。
Meaning
Wait until a situation becomes clear or calm.
Example
Let’s **wait for the dust to settle** before making a decision.
让我们在做决定之前等待局势平静下来。
idiom

edge out

以微弱优势击败某人或某物
Meaning
to narrowly defeat someone or something
Example
They **edged out** their rivals by just one point.
他们以一分之差战胜了对手。
idiom

On a shoestring budget

用很少的钱做事或生活。
Meaning
To live or do something with very little money.
Example
They traveled across Asia **on a shoestring budget**.
他们以**紧张的预算**穿越了亚洲。
idiom

get out of hand

失去控制
Meaning
to become difficult to control
Example
The party started to **get out of hand** when more people arrived.
当更多的人到达时，派对开始失去控制。
idiom

give someone a leg up

帮助某人改善他们的处境或获得优势
Meaning
to help someone improve their situation or get an advantage
Example
Her mentor **gave her a leg up** in her career.
她的导师在她的职业生涯中**给了她一个提升**。
idiom

make it to the top

达到成功的最高点
Meaning
to reach the highest point of success
Example
After years of hard work, he finally **made it to the top** of his career.
经过多年的辛勤工作，他终于**达到了事业的巅峰**。
idiom

kick back

放松一下，暂时什么都不做
Meaning
to relax and do nothing for a while
Example
After finishing the project, we just **kicked back** and watched a movie.
完成项目后，我们就放松地看了一部电影。
idiom

have a lightbulb moment

突然的领悟或想法
Meaning
a sudden realization or idea
Example
When I saw the problem from a different angle, I had a **lightbulb moment**.
当我从不同的角度看问题时，我有一个**灵光一闪的时刻**。
idiom

adapt or perish

为了生存，必须适应新的条件
Meaning
to survive, one must adjust to the new conditions
Example
In the business world, it's all about **adapt or perish**.
在商业世界中，一切都与**适应或灭亡**有关。
idiom

build bridges

改善人与人之间的关系
Meaning
to improve relationships between people
Example
We need to **build bridges** between our two departments.
我们需要在两个部门之间**建立联系**。
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

ground control

管理情况的权威或人们
Meaning
authority or people managing a situation
Example
In this project, Sarah is **ground control**.
在这个项目中，Sarah 是控制中心。
idiom

keep the fire burning

保持火焰
Meaning
to stay motivated and passionate about something
Example
Even after failure, he managed to **keep the fire burning**.
即使失败后，他仍然能够保持火焰。
idiom

Freudian slip

无意中犯的错误，暴露出一个人的真实想法或感受。
Meaning
An unintentional mistake that reveals one's true thoughts or feelings.
Example
He made a **Freudian slip** when he called his boss ‘mom’.
他称他的老板为‘妈妈’时犯了一个**弗洛伊德失言**。
idiom

Build bridges, not walls

建立联系和友谊，而不是筑起隔阂
Meaning
Make connections and friendships rather than creating barriers
Example
Instead of fighting, let's **build bridges, not walls**.
与其争吵，不如建立桥梁，而不是高墙。
idiom

breach of trust

未能保持信息或承诺的安全
Meaning
a failure to keep information or promises secure
Example
Leaking user data is a major **breach of trust**.
泄露用户数据是一个严重的**信任破裂**。
idiom

take responsibility

对你做过的事或你负责的事情负责。
Meaning
to be accountable for something you did or are in charge of.
Example
You need to **take responsibility** for your actions.
你需要为你的行为**承担责任**。
idiom

have the upper hand

对某人有控制或优势
Meaning
to have control or advantage over someone
Example
After the merger, the larger company **had the upper hand**.
合并后，大公司占据了上风。
idiom

once bitten, twice shy

在一次不愉快的经历之后，你会小心避免它再次发生
Meaning
after an unpleasant experience, you are careful to avoid it happening again
Example
After losing money in the stock market, he became **once bitten, twice shy**.
在股市中失去钱后，他变得**一旦受伤，两次害羞**。
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

spread kindness

对别人做或说善良的事情
Meaning
to do or say kind things to others
Example
We should all try to **spread kindness** every day.
我们每天都应该尽力去**spread kindness**。
idiom

set the example

以自己期望的行为为榜样
Meaning
to model the behavior you expect from others
Example
The manager always tries to **set the example** by being punctual and hardworking.
经理总是通过准时和勤奋工作来**树立榜样**。
idiom

the art of war

在困难情况下取得成功的策略或战术
Meaning
strategies or tactics for achieving success in difficult situations
Example
The general studied **the art of war** to prepare for the upcoming battle.
将军研究了战争的艺术，为即将到来的战斗做准备。
idiom

keep in touch

与某人保持沟通
Meaning
to maintain communication with someone
Example
Even after moving away, we **keep in touch** regularly.
即使搬走了，我们仍然保持定期**联系**。
idiom

on the stand

作为证人在法庭上作证
Meaning
testifying as a witness in court
Example
She was nervous when she was **on the stand**.
她在 **证人席** 上时感到很紧张。
idiom

break the clutter

在拥挤或竞争激烈的市场中脱颖而出
Meaning
to stand out in a crowded or competitive market
Example
A good tagline can help a brand **break the clutter**.
一个好的标语可以帮助品牌在混乱中脱颖而出。
idiom

Word on the street

街头的传闻或八卦
Meaning
Common rumor or gossip
Example
The **word on the street** is that the CEO might resign soon.
街头的传闻是，CEO可能很快辞职。
idiom

do the right thing by someone

公正和尊重地对待某人
Meaning
to treat someone fairly and with respect
Example
It's important to always **do the right thing by your colleagues**.
总是**为同事做正确的事**非常重要。
idiom

get away from it all

从日常生活中抽离；放松一下
Meaning
to take a break from daily routine; to relax
Example
We went to the countryside to **get away from it all**.
我们去了乡下放松一下，远离一切。
idiom

pull it off

成功完成某项困难的事情
Meaning
to succeed in doing something difficult
Example
No one thought she could do it, but she **pulled it off**.
没有人认为她能做到，但她做到了。
idiom

rule out

决定某事不可能
Meaning
to decide that something is not possible
Example
We can’t **rule out** another delay yet.
我们还不能排除再次延迟的可能。
idiom

the end of the road

进展停止的点；某事的结束
Meaning
the point where progress stops; the end of something
Example
For us, this is **the end of the road**.
对我们来说，这是**道路的尽头**。
idiom

raring to go

非常渴望或兴奋地开始某事
Meaning
very eager or excited to start something
Example
Everyone was **raring to go** when the event started.
活动开始时，每个人都非常兴奋。
idiom

to lose your nerve

失去勇气并变得太害怕去做某事
Meaning
to lose courage and become too afraid to do something
Example
He wanted to jump, but he **lost his nerve** at the last second.
他想跳跃，但在最后一刻失去了勇气。
idiom

to lay down the law

主张权威并决定事情应该如何做
Meaning
to assert authority and dictate how things should be done
Example
The new judge quickly **laid down the law** in the courtroom.
新法官很快在法庭上**放下法律**。
idiom

an open book

一个容易理解或非常诚实的人
Meaning
someone who is easy to understand or very honest
Example
He’s **an open book**; you can always tell what he’s thinking.
他是一本打开的书；你总能知道他在想什么。
idiom

in good hands

由可信的人照顾或管理
Meaning
to be cared for or managed by someone trustworthy
Example
Don’t worry, your child is **in good hands**.
别担心，你的孩子在**好手**中。
idiom

hang by a thread

处于非常危险或不确定的情况
Meaning
to be in a very dangerous or uncertain situation
Example
After the accident, his life was **hanging by a thread**.
事故发生后，他的生命**悬挂在一根线上**。
idiom

engagement rate

衡量人们与在线内容互动的活跃程度
Meaning
a measure of how actively people interact with online content
Example
Our **engagement rate** doubled after using video posts.
使用视频帖子后，我们的互动率翻倍了。
idiom

tone down

使某物变得不那么强烈或激烈
Meaning
to make something less forceful or intense
Example
Could you **tone down** the colors in that slide?
你能**降低**那个幻灯片中的颜色吗？