It rings a bell
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idiom

It rings a bell

某事听起来很熟悉
Meaning
something sounds familiar
Example
That name **rings a bell**, but I can’t remember where I heard it.
那个名字听起来很熟悉，但我记不得我在哪里听到的。
idiom

in a state of shock

极度惊讶或不安
Meaning
to be extremely surprised or upset
Example
She was **in a state of shock** after hearing the news.
她在听到新闻后**处于震惊状态**。
idiom

I owe you one

用于表达感谢并计划回报恩惠
Meaning
used to express that you are thankful and plan to return the favor
Example
Thanks for helping me move, **I owe you one**!
谢谢你帮我搬家，**我欠你一个人情**!
idiom

influencer marketing

通过社交媒体上的有影响力的人来推广产品
Meaning
promoting products through influential people on social media
Example
Many brands invest in **influencer marketing** to reach younger audiences.
许多品牌投资于**网红营销**，以接触更年轻的观众。
idiom

in the trenches

深深参与艰难工作或挑战性情境
Meaning
to be deeply involved in hard work or challenging situations
Example
She’s **in the trenches** with the rest of the team, solving problems every day.
她与团队的其他成员一起，**在战壕里**，每天解决问题。
idiom

In due time

在适当或合适的时间。
Meaning
At the right or appropriate time.
Example
Everything will be alright **in due time**, just be patient.
一切都会好起来的 **在适当时间**，只需耐心等待。
idiom

in good faith

怀着诚意; 真诚地
Meaning
with honest intentions; sincerely
Example
They acted **in good faith** when signing the agreement.
他们在签署协议时**出于诚意**。
idiom

I’d say

用于表达经过考虑的意见
Meaning
used to express a considered opinion
Example
**I’d say** this is the best option we have.
**我会说** 这是我们拥有的最佳选择
idiom

in the wrong hands

被可能造成伤害的人控制或使用
Meaning
controlled or used by people who could cause harm
Example
AI technology **in the wrong hands** could be disastrous.
人工智能技术落入错误的人手中可能是灾难性的。
idiom

In vogue

目前流行或时尚的
Meaning
Currently popular or fashionable
Example
Long skirts are **in vogue** again this season.
长裙在这个季节又流行起来了。
idiom

in for a shock

即将非常惊讶或震惊
Meaning
about to be very surprised or shocked
Example
You’re **in for a shock** when you see the bill.
当你看到账单时，你会大吃一惊。
phrasal-verb

iterate through drafts

按顺序审核和调整多个版本
Meaning
to review and adjust multiple versions in sequence
Example
We **iterate through drafts** until the collaboration guide reads clearly.
我们**遍历草稿**，直到协作指南清晰可读。
idiom

I couldn’t agree more

完全同意某人
Meaning
To completely agree with someone
Example
That’s exactly what I was thinking — **I couldn’t agree more**.
这正是我在想的 — **我完全同意**。
idiom

in a bad mood

心情不好
Meaning
feeling unhappy or irritable
Example
She’s **in a bad mood** because she didn’t sleep well.
她心情不好，因为她没睡好。
idiom

in hot water

陷入麻烦或困难
Meaning
in trouble or difficulty
Example
He’s **in hot water** for missing the meeting.
他因错过会议而陷入麻烦。
idiom

itching to do something

渴望或不耐烦地做某事
Meaning
to be eager or impatient to do something
Example
He’s **itching to start** his new project.
他迫不及待地开始他的新的项目。
idiom

in the hot seat

处于困难或不舒服的位置，通常受到公众审视
Meaning
to be in a difficult or uncomfortable position, often with public scrutiny
Example
After the controversy, the mayor was **in the hot seat** for several days.
争议之后，市长几天都处于**炙手可热的位置**。
idiom

in the same league

在质量或能力方面可比
Meaning
comparable in quality or ability
Example
Those two companies aren’t **in the same league**.
那两家公司不在同一个水平。
phrasal-verb

introduce yourself

在第一次见面时告诉某人你的名字和细节
Meaning
to tell someone your name and details when meeting for the first time
Example
It’s courteous to **introduce yourself** before joining a group.
在加入小组之前，介绍自己是礼貌的。
idiom

in contempt of court

蔑视或藐视法院的权威
Meaning
disrespecting or defying the authority of a court of law
Example
He was found **in contempt of court** for refusing to testify.
他因拒绝作证而被认定为藐视法庭
idiom

in harm’s way

处于可能受伤或危险的位置。
Meaning
In a position to be injured or in danger.
Example
Firefighters often put themselves **in harm’s way** to save others.
消防员经常将自己置于危险之中以拯救他人。
idiom

in a league of its own

在某个领域远远超过其他人。
Meaning
being far superior to others in a particular field.
Example
This smartphone is truly **in a league of its own** in terms of camera quality.
这款智能手机在相机质量方面真的是 **in a league of its own**。
phrasal-verb

inquire about

询问有关某事的信息
Meaning
to ask for information about something
Example
She called to **inquire about** the new course schedule.
她打电话来询问新课程时间表。
idiom

in stitches

笑得停不下来
Meaning
laughing uncontrollably
Example
His joke had everyone **in stitches**.
他的笑话让大家笑得停不下来。
idiom

in the red

负债；亏损
Meaning
to be in debt; losing money
Example
After the pandemic, many small businesses were **in the red**.
疫情过后，许多小企业都在亏损中。
idiom

Inquisitive mind

好奇并渴望学习的思维方式。
Meaning
A curious and eager-to-learn mindset.
Example
Children have an **inquisitive mind** that loves to explore.
孩子们有着一个**好奇心**，他们喜欢探索。
idiom

I’m of the opinion that

我相信; 表达一个坚定的意见
Meaning
I believe that; expressing a firm opinion
Example
I’m of the opinion that honesty always pays.
我相信诚实总会得到回报。
idiom

in a word

用于提供简明清晰的总结
Meaning
used to give a brief and clear summary
Example
The movie was, **in a word**, amazing.
这部电影, **一句话**, 非常棒。
idiom

in my book

根据我自己的看法或标准
Meaning
according to one’s own opinion or standards
Example
**In my book**, honesty comes first.
在我看来，诚实是最重要的。
idiom

in the doldrums

长时间感到悲伤或无聊
Meaning
feeling sad or bored for a long time
Example
He’s been **in the doldrums** since his team lost.
自从他的队伍输掉后，他一直**在低谷中**。
phrasal-verb

invite over

请某人来你家
Meaning
to ask someone to come to your home
Example
We’re planning to **invite over** our colleagues this weekend.
我们计划这个周末邀请我们的同事来家里。
idiom

in the dark web

在互联网上一个隐藏或秘密的部分，用于非法活动
Meaning
in a hidden or secret part of the internet used for illegal activities
Example
Stolen credentials often end up **in the dark web**.
被盗的凭证通常会出现在**黑暗网络中**。
idiom

in a tight spot

处于一个困难或棘手的情况
Meaning
to be in a difficult or tricky situation
Example
He found himself **in a tight spot** when both friends asked for help.
当两个朋友请求帮助时，他发现自己**陷入困境**。
idiom

ink in

以书面形式安排或确认某事
Meaning
to schedule or confirm something in writing
Example
I’ll **ink in** the interview for Tuesday morning.
我将安排周二早上的面试。
idiom

in your face advertising

具有攻击性或非常直接的广告形式
Meaning
aggressive or very direct form of advertising
Example
Some brands use **in your face advertising** to stay memorable.
一些品牌使用**直面广告**来保持其记忆度。
idiom

in so many words

清楚而直接地说某事
Meaning
to say something clearly and directly
Example
He didn’t say it **in so many words**, but I knew what he meant.
他没有直说，但我知道他的意思。
idiom

iron out the kinks

解决小问题或瑕疵
Meaning
to resolve small problems or imperfections
Example
We’ll **iron out the kinks** before launch day.
我们将在发布日前解决所有小问题。
idiom

in no time

非常快; 几乎立刻
Meaning
very quickly; almost immediately
Example
He finished the task **in no time**.
他很快就完成了任务。
idiom

in the money

突然拥有很多钱
Meaning
to suddenly have a lot of money
Example
After winning the lottery, they were **in the money**.
中奖后，他们**in the money**了。
idiom

I’m with you

我同意你的想法
Meaning
I agree with your idea or opinion
Example
**I’m with you** on that plan — it’s a good one.
我同意你的计划——这是个好计划。
idiom

in one’s element

做自己擅长或喜欢的事情
Meaning
doing something one is good at or enjoys
Example
He’s **in his element** when he’s cooking for friends.
他在为朋友做饭时**在他的元素中**
idiom

I’m here for you

你可以依靠我的支持。
Meaning
You can count on my support.
Example
Whenever you need me, **I’m here for you**.
无论何时你需要我，**我在这里为你而在**。
idiom

in the long run

经过长时间; 最终
Meaning
after a long time; in the end
Example
Saving money now will help you **in the long run**.
现在储蓄将帮助你 **从长远来看**。
idiom

in the heat of the moment

冲动或情绪化地行动，没有经过深思熟虑
Meaning
acting impulsively or emotionally, without thinking
Example
I said some things I regret **in the heat of the moment**.
我说了一些我后悔的话 **在那一刻的冲动下**。
idiom

in the back of one's mind

在没有完全注意的情况下想到某事
Meaning
thinking about something without giving it full attention
Example
I've always had this idea **in the back of my mind**, but never really acted on it.
我一直在**脑海深处**有这个想法，但从未真正付诸行动。
idiom

it's not rocket science

这不难理解
Meaning
it's not difficult to understand
Example
You can learn to cook, **it's not rocket science**.
你可以学会做饭，**这不难理解**。
idiom

in all honesty

完全诚实或真诚。
Meaning
To be completely truthful or sincere.
Example
**In all honesty**, I think he deserves the job.
说实话，我认为他应该得到这份工作。
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

in the pink of health

身体非常健康
Meaning
in very good health
Example
After months of rest, he’s now **in the pink of health**.
经过几个月的休息，他现在**身体非常健康**。
idiom

in high spirits

感到高兴和快乐
Meaning
feeling cheerful and happy
Example
Everyone was **in high spirits** during the festival.
在节日期间，每个人都兴高采烈。
idiom

in over one’s head

陷入了自己难以应付的事情中
Meaning
to be involved in something too difficult to handle
Example
He’s **in over his head** with this complex project.
他在这个复杂的项目中**力不从心**。
idiom

In for the long haul

准备长时间做某事。
Meaning
Prepared to continue something for a long time.
Example
He knew that success would take years, but he was **in for the long haul**.
他知道成功需要多年，但他已经准备好**长期奋斗**。
idiom

in the spotlight

接受公众关注
Meaning
receiving public attention
Example
After the award, she’s been **in the spotlight** constantly.
获奖后，她一直处于**聚光灯下**。
idiom

in cold blood

没有感情或怜悯; 故意残忍
Meaning
without emotion or pity; deliberately cruelly
Example
The victim was murdered **in cold blood**.
受害者被无情地谋杀。
phrasal-verb

integrate with

与另一个系统结合或共同工作
Meaning
to combine or work together with another system
Example
Our app can **integrate with** multiple payment gateways.
我们的应用可以**集成与**多个支付网关。
idiom

in a world of your own

陷入思维或想象之中
Meaning
to be lost in thought or imagination
Example
He didn’t hear me because he was **in a world of his own**.
他没听到我说话，因为他 **在自己的世界里**。
idiom

in a huff

生气或被冒犯，通常是短时间内
Meaning
angry or offended, usually for a short time
Example
She left the meeting **in a huff** after being criticized.
她在被批评后**生气地**离开了会议。
idiom

In the picture

涉及或知情关于某个情况
Meaning
Involved or informed about a situation
Example
I want to stay **in the picture** about the new project.
我想保持**在画面中**，了解新项目。
idiom

In uncharted waters

处于未知或不熟悉的情况中。
Meaning
In a situation that is unknown or unfamiliar.
Example
The astronauts are heading into **uncharted waters** as they explore the unknown galaxy.
宇航员在探索未知星系时进入了未知的水域。
idiom

in orbit

处于极度兴奋或活跃的状态
Meaning
in a state of great excitement or activity
Example
The team was **in orbit** after the big win.
在大胜之后，团队处于**在轨道上**。
idiom

in the footsteps of

跟随某人的例子或职业道路
Meaning
to follow someone’s example or career path
Example
She followed **in the footsteps of** her father, becoming a successful entrepreneur.
她**跟随某人的脚步**，成为了一位成功的企业家。
idiom

in the driver's seat

掌控局势
Meaning
to be in control of a situation
Example
After the merger, she was **in the driver’s seat** of the company.
合并后，她掌控了公司的局势。
idiom

in the mood

有做某事的想法或有特定的态度
Meaning
feeling like doing something or having a particular attitude
Example
I'm **in the mood** for some chocolate cake today.
今天我想吃巧克力蛋糕。
idiom

inside job

由组织内部某人犯下的罪行
Meaning
a crime committed by someone within the organization affected
Example
The robbery turned out to be an **inside job**.
抢劫结果证明是一起内部工作。
idiom

in layman's terms

用简单的非技术性语言解释某事
Meaning
to explain something in simple, non-technical language
Example
Can you explain the theory **in layman's terms**?
你能**用通俗易懂的语言**解释这个理论吗？
idiom

in beta

在最终发布前的测试阶段
Meaning
in the testing phase before final release
Example
The app is still **in beta**, so expect some bugs.
这个应用仍然处于**测试版**，因此请预期会有一些bug。
idiom

In a peaceful state of mind

感到放松和平静，没有压力或担忧
Meaning
feeling relaxed and at ease without stress or worry
Example
After yoga, she felt **in a peaceful state of mind** all day.
瑜伽之后，她整天都感到**心境平和**。
idiom

if you ask me

用于表达个人意见，通常在没有被询问的情况下
Meaning
used when giving a personal opinion, often without being asked
Example
**If you ask me**, they made a bad decision.
如果你问我，他们做了一个错误的决定。
phrasal-verb

immerse in

深深地参与到某种文化或活动中
Meaning
to deeply involve oneself in a particular culture or activity
Example
He **immersed himself in** the local traditions to understand them better.
他**沉浸在**当地的传统中，以便更好地理解它们。
idiom

in someone’s good books

被某人喜欢或批准
Meaning
to be liked or approved by someone
Example
She’s **in her boss’s good books** after completing the project early.
她在**她老板的好书中**，因为她提前完成了项目。
idiom

in one ear and out the other

对所说的话不加注意
Meaning
to not pay attention to what is said
Example
Whatever I tell him goes **in one ear and out the other**.
无论我对他说什么，都左耳进右耳出。
idiom

in good shape

身体健康并保持良好体型
Meaning
to be physically fit and healthy
Example
He goes to the gym regularly to stay **in good shape**.
他定期去健身房保持身体健康。
idiom

in the nick of time

在最后可能的时刻；就在为时已晚之前
Meaning
at the last possible moment; just before it’s too late
Example
He arrived **in the nick of time** to catch the train.
他**在时间的关头**赶上了火车。
idiom

in the pipeline

正在计划或开发中
Meaning
being planned or developed
Example
Several new projects are **in the pipeline**.
几个新项目正在进行中。
idiom

in the clear

无罪或没有嫌疑
Meaning
not guilty or free from suspicion
Example
After the investigation, he was found to be **in the clear**.
经过调查后，他被发现是清白的。
idiom

in harmony

和平与和谐地一起生活或工作
Meaning
living or working together in peace and agreement
Example
They work **in harmony** to create a peaceful community.
他们**和谐地**工作以创造一个和平的社区。
idiom

it's a piece of cake

这很容易
Meaning
it's very easy
Example
The exam was **a piece of cake**.
考试很容易。
idiom

in my opinion

用来表达某人所想或所信的意思
Meaning
used to express what one thinks or believes
Example
**In my opinion**, this movie is too long.
在我看来，这部电影太长了。
idiom

in safe hands

受到值得信赖的人的保护或照顾。
Meaning
Being protected or taken care of by someone trustworthy.
Example
Don’t worry about the kids, they’re **in safe hands** with Grandma.
别担心孩子们，他们在奶奶的照顾下很安全。
idiom

in black and white

书面形式; 明确声明
Meaning
in written form; clearly stated
Example
The rules are clearly written **in black and white**.
规则明确写成了 **黑白分明**。
idiom

in the dumps

感到伤心或沮丧
Meaning
feeling sad or depressed
Example
After the argument, he was really **in the dumps**.
争论之后，他真的很沮丧。
idiom

in the line of fire

处于一个可能会被指责或批评的情况
Meaning
to be in a situation where one is likely to be blamed or criticized
Example
The manager found himself **in the line of fire** after the project failed.
在项目失败后，经理发现自己**火线中**。
idiom

It's always darkest before the dawn

事情通常在好转之前最糟糕。
Meaning
Things are usually worst just before they improve.
Example
Keep going, **it's always darkest before the dawn**.
继续前进，**黎明前总是最黑暗的。**
idiom

in the same frame

拥有共同的视角或理解
Meaning
having a shared perspective or understanding
Example
Before we start, we need to make sure everyone is **in the same frame**.
在我们开始之前，我们需要确保每个人都**在同一框架中**。
idiom

in the loop

了解某事的最新情况
Meaning
to be informed about something
Example
Please keep me **in the loop** about the project updates.
请让我了解项目的最新进展。
idiom

in full color

以极大的细节和生动性
Meaning
in great detail and vividness
Example
The documentary showed the event **in full color**.
纪录片展示了事件 **以极大的细节和生动性**。
idiom

in the same boat

与他人处于同样的困难境地
Meaning
to be in the same difficult situation as others
Example
We are all **in the same boat** with these challenges.
面对这些挑战，我们都处在同一条船上。
idiom

In the eye of the beholder

美丽或价值是主观的，取决于观看者。
Meaning
Beauty or value is subjective and dependent on the viewer.
Example
Art is truly **in the eye of the beholder**, as different people have different tastes.
艺术确实是**在观者眼中**，因为不同的人有不同的品味。
idiom

it’s raining cats and dogs

雨下得很大
Meaning
raining very heavily
Example
We can’t go out now; **it’s raining cats and dogs**.
我们现在不能出去; 雨下得很大。
idiom

internet troll

故意在线发布冒犯性或挑衅性评论的人
Meaning
a person who deliberately posts offensive or provocative comments online
Example
Don’t feed the **internet trolls** by replying to their comments.
不要通过回复他们的评论来喂养**互联网喷子**。
idiom

in two minds

犹豫不决
Meaning
undecided about something
Example
I'm **in two minds** about accepting the new job offer.
我**犹豫不决**是否接受新的工作邀请。
idiom

I feel that

用来表达个人的信念或感觉
Meaning
Used to express a personal belief or feeling
Example
I feel that we could do better next time.
我觉得我们下次可以做得更好。
idiom

in the lab

在实验室环境中进行实验或研究
Meaning
working in a laboratory environment on experiments or research
Example
The new vaccine is currently being tested **in the lab** before it’s released to the public.
新疫苗正在 **在实验室** 进行测试，之后将向公众发布。
idiom

it blew my mind

它让我完全震惊
Meaning
it amazed or shocked me completely
Example
The technology they used **blew my mind**.
他们使用的技术让我震惊。
idiom

In a new light

从不同的角度看待某事
Meaning
To see something from a different perspective
Example
After the discussion, I saw the issue **in a new light**.
讨论之后，我以**全新角度**看待了这个问题。
idiom

itchy feet

强烈的旅行或四处走动的欲望
Meaning
a strong desire to travel or move around
Example
After a few months at home, I started to get **itchy feet** again.
在家待了几个月后，我又开始感到 **想旅行** 了。
phrasal-verb

identify as

将自己定义为属于特定的文化或族群
Meaning
to define oneself as belonging to a particular cultural or ethnic group
Example
He **identifies as** both Bangladeshi and global citizen.
他自认是孟加拉人和全球公民。
idiom

in deep water

处于严重的麻烦或困境
Meaning
to be in serious trouble or difficulty
Example
He’s **in deep water** after missing the deadline again.
他在**深水区**因为再次错过了截止日期。
idiom

It’s not over till it’s over

不要在结束前失去希望。
Meaning
Don’t lose hope until the end.
Example
**It’s not over till it’s over**, we can still win this game.
一切还没结束，直到一切结束，我们仍然可以赢得这场比赛。
phrasal-verb

identify with

感到与某个群体或文化相连，或理解他们的感受
Meaning
to feel connected to or understand the feelings of a group or culture
Example
I deeply **identify with** my ancestors’ struggles and values.
我深深地**认同**我的祖先的斗争和价值观。
idiom

In the blink of an eye

非常快，几乎是瞬间。
Meaning
Very quickly, almost instantaneously.
Example
The discovery of the new planet happened **in the blink of an eye**.
新行星的发现几乎是一瞬间发生的。
phrasal-verb

invest in infrastructure

花钱用于建筑、系统或服务，以促进长期发展
Meaning
to spend money on buildings, systems, or services for long-term development
Example
Developing nations are trying to **invest in infrastructure** to support economic growth.
发展中国家正在努力**投资基础设施**，以支持经济增长。
phrasal-verb

integrate into

将一件事物与另一件事物结合，形成一个整体
Meaning
to combine one thing with another to make a whole
Example
We will **integrate into** the global digital ecosystem.
我们将**集成到**全球数字生态系统中。
idiom

It never rains but it pours

当坏事发生时，它们总是一起来的。
Meaning
When bad things happen, they happen all at once.
Example
First I lost my phone, then my wallet — **it never rains but it pours**.
我先丢了手机，又丢了钱包——祸不单行。
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

it takes two to tango

在某种情况下，参与的人都有同等的责任
Meaning
both people involved in a situation are equally responsible
Example
You can't blame only him for the argument - **it takes two to tango**.
你不能只怪他争论 - **跳探戈需要两个人**。
idiom

in the public eye

在公众中广为人知或引人注目
Meaning
being well known or highly visible in public
Example
The journalist has been **in the public eye** for over a decade.
那位记者已经在公众视野中活跃了十多年。
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

in seventh heaven

处于极度幸福的状态
Meaning
in a state of great happiness
Example
They were **in seventh heaven** during their honeymoon.
他们在蜜月期间如同置身天堂。
idiom

iron out the bugs

修复小问题或错误
Meaning
to fix small problems or errors
Example
We spent the whole night **ironing out the bugs** in the AI chatbot.
我们整晚都在修复AI聊天机器人的小错误。
idiom

In the know

拥有大多数人没有的信息。
Meaning
Having information that most people do not have.
Example
She’s always **in the know** about company secrets.
她总是知道公司机密。
phrasal-verb

invest in

将金钱、努力或时间投入到某事中，以获得利润或结果
Meaning
to put money, effort, or time into something to achieve a profit or result
Example
The country continues to **invest in** renewable energy projects.
该国继续投资于可再生能源项目。
idiom

In someone’s corner

在别人需要的时候支持或陪伴他们
Meaning
To support or stand by someone in times of need
Example
I always know my family will be **in my corner** when things go wrong.
我总是知道，当事情出错时，我的家人会站在我这边。
idiom

iron out the wrinkles

解决小问题或分歧
Meaning
to solve small problems or differences
Example
We need to **iron out the wrinkles** before launching the project.
我们需要在启动项目之前解决小问题。
idiom

in a pickle

处于一个困难或棘手的情况
Meaning
in a difficult or tricky situation
Example
I'm **in a pickle** because I double-booked my meetings.
我**在一个 pickle**，因为我双重预定了我的会议。
idiom

in a nutshell

简要总结某事
Meaning
to summarize something briefly
Example
To put it **in a nutshell**, we need more funding.
简单来说，我们需要更多资金。
idiom

iron out

解决小问题或差异
Meaning
to resolve small problems or differences
Example
We need to **iron out** the payment details before signing.
我们需要在签署之前解决支付细节。
idiom

in the limelight

成为公众关注的焦点
Meaning
to be the focus of public attention
Example
After winning the award, he was **in the limelight** for months.
获奖后，他在几个月内成了公众关注的焦点。
idiom

in the black

盈利；财务稳定
Meaning
making a profit; financially stable
Example
Our company is finally **in the black** after two years.
我们公司在两年后终于**盈利了**。
idiom

iron curtain

在意识形态或政治上分隔国家的障碍
Meaning
a barrier separating nations ideologically or politically
Example
During the Cold War, Europe was divided by the **iron curtain**.
在冷战期间，欧洲被**铁幕**分隔开。
idiom

iron fist in a velvet glove

温和的外表掩藏着强烈的控制力
Meaning
a gentle outward appearance hiding strong control
Example
Her leadership style is an **iron fist in a velvet glove**.
她的领导风格就是**铁拳戴天鹅绒手套**。