backpropagation
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idiom

backpropagation

一种用于神经网络的学习算法，通过调整网络中的权重来最小化错误
Meaning
a learning algorithm used in neural networks to minimize error by adjusting weights through the network
Example
The **backpropagation** algorithm helps in optimizing the neural network's performance.
反向传播算法有助于优化神经网络的性能。
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

take the credit

接受因某事而得到的赞扬
Meaning
to accept praise for something one did
Example
She was the one who solved the issue, but he tried to **take the credit**.
是她解决了问题，但他试图**获得功劳**。
idiom

switch over

从一个系统或选项切换到另一个
Meaning
to change from one system or option to another
Example
The team will **switch over** to the new software tonight.
团队今晚将切换到新软件。
idiom

On the clock

工作中，通常有严格的时间限制或截止日期。
Meaning
Working, often with a strict time limit or deadline.
Example
I’m **on the clock** today, so I can’t waste any time.
我今天**在上班**，所以不能浪费时间。
idiom

better safe than sorry

谨慎总比冒险后悔要明智。
Meaning
It’s wiser to be cautious than to take risks and regret later.
Example
I always double-check the locks — **better safe than sorry**.
我总是仔细检查锁 — 谨慎总比事后后悔好。
idiom

A bright future awaits

美好的事情即将到来
Meaning
good things are coming ahead
Example
Despite the challenges, a **bright future awaits** you.
尽管面临挑战，**光明的未来在等待你**。
idiom

fall in with

加入或同意一个小组或计划
Meaning
to join or agree with a group or plan
Example
She decided to **fall in with** the volunteer crew for the weekend.
她决定加入志愿者团队度过周末。
idiom

Don’t throw in the towel

不要放弃或停止。
Meaning
Don’t give up or quit.
Example
**Don’t throw in the towel** even if it’s hard.
**不要放弃** 即使它很难。
idiom

throw someone under the bus

为了自保而背叛或牺牲某人
Meaning
to betray or sacrifice someone to save yourself
Example
He **threw his colleague under the bus** to avoid getting fired.
他为了避免被解雇，**出卖了同事**。
idiom

A true friend is one who stands by you

一个真正的朋友会在你困难的时候陪伴你
Meaning
A true friend will be there for you during difficult times
Example
Even in the worst of times, she proved to be a true friend. **A true friend is one who stands by you**.
即使在最糟糕的时候，她证明了自己是一个真正的朋友。**一个真正的朋友会在你困难的时候陪伴你**。
idiom

Fair enough

用于表示你理解或接受某人的观点
Meaning
Used to show you understand or accept someone’s point
Example
‘We can’t afford it now.’ ‘**Fair enough**, maybe later.’
“我们现在负担不起。” “好吧，也许以后吧。”
idiom

turn the other cheek

忽视侮辱或避免复仇
Meaning
to ignore insults or avoid taking revenge
Example
He chose to **turn the other cheek** instead of fighting back.
他选择了**转过另一边脸**而不是反击。
idiom

hit the pause button

暂停或暂时停止你正在做的事情
Meaning
to take a break or stop what you are doing temporarily
Example
After weeks of hard work, I decided to **hit the pause button** and relax for a while.
经过几周的辛勤工作后，我决定按下暂停键，休息一下。
idiom

feel on top of things

感觉积极并掌控自己的生活
Meaning
feeling positive and in control of your life
Example
After organizing her tasks, she felt **on top of things**.
在整理完任务后，她感到 **掌控一切**。
idiom

on the money

完全正确或准确
Meaning
exactly correct or accurate
Example
His prediction about the stock was **on the money**.
他对股票的预测是 **on the money**。
idiom

back up

支持或备份重要数据
Meaning
to support or to make a copy of important data
Example
Can you **back up** my explanation during the meeting?
你能在会议期间支持我的解释吗？
idiom

rule of thumb

基于经验的一般实践原则
Meaning
a general practical principle based on experience
Example
As a **rule of thumb**, I double-check every document.
作为一条经验法则，我会对每份文件进行双重检查。
idiom

zero-day vulnerability

软件中的安全漏洞，黑客在供应商有机会修复之前就加以利用
Meaning
A security flaw in software that is exploited by hackers before the vendor has a chance to fix it
Example
The **zero-day vulnerability** was exploited by hackers to steal sensitive data.
黑客利用**零日漏洞**窃取了敏感数据。
idiom

Be as good as your word

Zuò nǐ suǒ chéngnuò de shì.
Meaning
To do what you promised to do.
Example
He said he’d help and he’s **as good as his word**.
Tā shuō tā huì bāngzhù, ér tā **rú tā de huà yīyàng hǎo**.
idiom

jump in

迅速加入某个活动
Meaning
to join an activity quickly
Example
Feel free to **jump in** if you have suggestions.
如果你有建议，请随时**加入**。
idiom

the picture of health

一个看起来非常健康的人
Meaning
a person who looks very healthy
Example
Despite his age, he’s still **the picture of health**.
尽管他年纪大了，他仍然是健康的象征。
idiom

to learn the hard way

通过犯错或艰难的经验来学习
Meaning
to learn by making mistakes or through difficult experiences
Example
He **learned the hard way** that honesty is the best policy.
他 **通过艰难的方式学到** 诚实是最好的政策。
idiom

To break ground

开始一个新的项目或倡议。
Meaning
To begin a new project or initiative.
Example
The company is excited to **break ground** on their new office next month.
公司很高兴下个月在他们的新办公室**破土动工**。
idiom

to take a turn for the worse

病情恶化或健康下降
Meaning
to become worse or decline in health
Example
His condition **took a turn for the worse** last night.
他的病情昨晚**恶化了**。
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

sleep tight

睡个好觉，安眠
Meaning
to have a good and peaceful sleep
Example
Good night! **Sleep tight** and sweet dreams.
晚安！睡个好觉，做个好梦。
idiom

when life gives you lemons, make lemonade

在困境中尽力而为
Meaning
make the best out of a bad situation
Example
She lost her job but decided to **make lemonade** by starting her own business.
她失去了工作，但决定通过创业来化解困境。
idiom

a close call

一个灾难或事故险些发生的情况。
Meaning
A situation where a disaster or accident was narrowly avoided.
Example
That was **a close call** — the car almost hit us!
那真是**千钧一发** — 车差点撞到我们！
idiom

make oneself clear

以一种容易理解的方式表达自己
Meaning
to express oneself in a way that is easy to understand
Example
Could you **make yourself clear**, please?
请你说清楚一点，可以吗？
idiom

to kick the bucket

死（幽默或非正式）
Meaning
to die (humorous or informal)
Example
He used to joke that he’d travel the world before he **kicked the bucket**.
他常开玩笑说他会在**踢桶**之前旅行世界。
idiom

a big mouth

一个说话太多或者揭露秘密的人
Meaning
a person who talks too much or reveals secrets
Example
Don’t tell Jake, he’s **a big mouth**!
不要告诉杰克，他是**一个嘴巴很大的人**！
idiom

turing test

测试机器展示与人类等效或无法区分的智能行为的能力
Meaning
a test of a machine's ability to exhibit intelligent behavior equivalent to, or indistinguishable from, that of a human
Example
The AI passed the **Turing test**, convincing the judges that it was human-like.
人工智能通过了**图灵测试**，让评委相信它像人类一样。
idiom

wired to learn

天生被设计来获取知识或技能
Meaning
naturally designed to acquire knowledge or skills
Example
Humans are **wired to learn**, just like AI systems.
人类天生就像人工智能系统一样被设计来学习。
idiom

steer someone in the right direction

引导某人走上正确的道路或做出正确的决定
Meaning
to guide someone towards the correct path or decision
Example
The senior manager helped **steer me in the right direction** when I was unsure about the project.
高级经理在我对项目不确定时帮助我，**引导我走上正确的方向**。
idiom

to shoot for the moon

瞄准一个困难或雄心勃勃的目标
Meaning
to aim for a difficult or ambitious goal
Example
He’s always **shooting for the moon**, trying to achieve impossible goals.
他总是**瞄准月亮**，试图实现不可能的目标。
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

put words in someone’s mouth

将话塞进某人口中
Meaning
to say someone said something they did not
Example
Don’t **put words in my mouth**—I never said that!
别把话塞进我嘴里——我从来没说过那话！
idiom

golden opportunity

一个非常好的机会；稀有的机会
Meaning
a very good chance; rare opportunity
Example
This is a **golden opportunity** to show your talent.
这是一个**黄金机会**展示你的才华。
idiom

Meet your Waterloo

面对最终和决定性的失败。
Meaning
To face a final and decisive defeat.
Example
After years of success, the company finally **met its Waterloo** when sales plummeted.
经过多年的成功，这家公司终于在销售暴跌时**遭遇了自己的滑铁卢**。
idiom

Scale up

扩大公司的运营或范围。
Meaning
To expand a company’s operations or reach.
Example
The startup is ready to **scale up** after its first funding round.
该初创公司在第一轮融资后准备**扩大**。
idiom

hook the customer

吸引并保持客户的兴趣
Meaning
to attract and keep a customer’s interest
Example
A good slogan can easily **hook the customer**.
一个好的口号可以轻松吸引客户。
idiom

earn trust

通过行动或可靠性获得某人的信任
Meaning
to gain someone's trust through actions or reliability
Example
She worked hard to **earn the trust** of her colleagues.
她努力工作以**获得同事的信任**。
idiom

put heads together

一起合作解决问题
Meaning
to work together to solve a problem
Example
Let’s **put our heads together** and find a solution.
让我们**集思广益**，找到解决方案。
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**。
idiom

peace of mind

一种平静和无忧的感觉
Meaning
a feeling of being calm and free from worry
Example
Insurance gives you **peace of mind** in uncertain times.
保险在不确定的时期给你**安心感**。
idiom

know the ropes

对某事非常熟悉；对某事有透彻理解
Meaning
to be very familiar with something; to have a thorough understanding of something
Example
He really **knows the ropes** in this field of work.
他在这个工作领域真的**非常熟悉**
idiom

put in a nutshell

简要总结某事
Meaning
to summarize something briefly
Example
To **put it in a nutshell**, we need more time to finish.
简而言之，我们需要更多时间来完成。
idiom

pay a compliment

给某人赞美或钦佩
Meaning
to give praise or admiration to someone
Example
He always knows how to **pay a compliment** to make someone feel better.
他总是知道如何称赞别人让他们感觉更好。
idiom

scratch someone's back

为某人做某事，以换取以后得到的帮助或好处
Meaning
to do something for someone in exchange for a favor or help later
Example
We agreed to **scratch each other's backs** in this business deal.
我们同意在这笔商业交易中互相**刮背**。
idiom

a tough decision to make

一个难以做出的决定，因为潜在的后果
Meaning
a decision that is difficult to make because of the potential consequences
Example
Choosing between two job offers was **a tough decision to make**.
在两个工作机会之间做出选择是一个艰难的决定。
idiom

trailblaze

第一个做某事或引领道路
Meaning
to be the first to do something or lead the way
Example
She is a **trailblazer** in the tech industry.
她是科技行业的**开拓者**。
idiom

take it or leave it

对接受或拒绝某事表现出无所谓的态度
Meaning
showing indifference about accepting or rejecting something
Example
That’s my final offer — **take it or leave it**.
这是我最后的报价——要么接受，要么拉倒。
idiom

keep an eye out

仔细观察某事或某人
Meaning
to watch for something or someone carefully
Example
Can you **keep an eye out** for my package while I'm away?
我不在的时候，你能**注意**我的包裹吗？
idiom

Risk it for the biscuit

冒险去获得有价值的东西。
Meaning
To take a risk to achieve something worthwhile.
Example
He knew it was risky, but he decided to **risk it for the biscuit**.
他知道这很冒险，但他决定**为饼干冒险**。
idiom

moonlight as

做第二份工作，特别是秘密地或兼职工作
Meaning
to work at a second job, especially secretly or part-time
Example
She decided to **moonlight as** a freelance writer to make extra money.
她决定 **moonlight as** 自由撰稿人，以赚取额外的收入。
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

more luck than sense

因为运气而成功，而不是因为智慧
Meaning
successful because of luck, not intelligence
Example
He survived the accident—he’s got **more luck than sense**.
他在事故中幸存下来——他有 **更多的运气而非智慧**。
idiom

bury the hatchet

停止争斗并重新成为朋友
Meaning
to stop fighting and become friends again
Example
After years of argument, they decided to **bury the hatchet**.
经过多年的争执，他们决定**和解**。
idiom

call to mind

记起或回想起某事
Meaning
to remember or recall something
Example
This song **calls to mind** my childhood days.
这首歌让我想起了我的童年。
idiom

put something on the back burner

推迟处理某事直到以后
Meaning
to delay dealing with something until later
Example
The government decided to **put the issue on the back burner** for now.
政府决定**暂时将这个问题搁置**。
idiom

nip it in the bud

在问题变得更糟之前阻止它
Meaning
to stop a problem before it gets worse
Example
We should **nip it in the bud** before it becomes serious.
我们应该在事情变得严重之前阻止它。
idiom

rise and fall

某人或某事随时间的成功与失败
Meaning
the success and failure of someone or something over time
Example
The documentary shows the **rise and fall** of the Roman Empire.
纪录片展示了罗马帝国的**rise and fall**。
idiom

data lake

存储原始、未处理数据的大型存储库
Meaning
a large storage repository that holds raw, unprocessed data
Example
All raw data is stored in the **data lake** for further analysis.
所有原始数据都存储在 **数据湖** 中以供进一步分析。
idiom

break the law

犯下非法行为
Meaning
to commit an illegal act
Example
Anyone who **breaks the law** should be punished.
任何**违法的人**都应该受到惩罚。
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

social media blackout

社交媒体服务不可用或故意避免的时期
Meaning
a period when social media services are unavailable or intentionally avoided
Example
During the **social media blackout**, everyone started reading books again.
在**社交媒体封锁**期间，每个人开始重新阅读书籍。
idiom

go places

未来有可能成功
Meaning
to be likely to become successful in the future
Example
Everyone says he’s going to **go places** with his skills.
每个人都说他会凭借自己的技能取得成功。
idiom

hard as nails

非常坚强和有决心
Meaning
very tough and determined
Example
She’s **hard as nails** when it comes to achieving her goals.
她在实现目标时非常坚强和有决心。
idiom

Time heals all wounds

情感上的痛苦随着时间会减轻。
Meaning
Emotional pain will lessen with time.
Example
Don’t worry, time heals all wounds.
别担心，时间会治愈所有的伤口。
idiom

kindness goes a long way

一小个善举可能带来巨大的积极影响
Meaning
a small act of kindness can have a big positive impact
Example
Remember, **kindness goes a long way** in building good relationships.
记住，**善良有很大的作用**在建立好关系时。
idiom

Running on empty

当你没有剩余能量时继续工作或运作。
Meaning
To continue working or functioning when you have no energy left.
Example
After pulling an all-nighter, he’s **running on empty** today.
经过一整夜的熬夜，他今天完全筋疲力尽。
idiom

Bet your bottom dollar

对某事非常确定或自信。
Meaning
To be very sure or confident about something.
Example
You can **bet your bottom dollar** that he’ll show up late again.
你可以**打赌你最后一块钱**他又会迟到。
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

blow out of proportion

夸大或过度陈述某事
Meaning
to exaggerate or overstate something
Example
The media **blew the story out of proportion**.
媒体把故事夸大了。
idiom

go for broke

冒一切风险去取得成功
Meaning
to risk everything to achieve success
Example
They decided to **go for broke** and launch their new product.
他们决定冒一切风险推出他们的新产品。
idiom

serenity now

在压力大的情况下用来唤起冷静的短语
Meaning
a phrase used to invoke calmness, usually in a stressful situation
Example
Whenever I feel stressed, I remind myself to say **serenity now**.
每当我感到压力时，我会提醒自己说 **宁静现在**。
idiom

wipe the slate clean

忘掉过去的错误，重新开始
Meaning
to forget past mistakes and start fresh
Example
Let’s **wipe the slate clean** and begin again.
让我们忘掉过去的错误，重新开始吧
idiom

zero-day attack

利用之前未知漏洞的网络攻击
Meaning
a cyberattack that exploits a previously unknown vulnerability
Example
The team discovered a **zero-day attack** before it spread widely.
团队在 **zero-day attack** 广泛传播之前就发现了它。
idiom

fail to deliver

没有达到期望或未成功完成任务
Meaning
to not meet expectations or complete a task successfully
Example
The company promised improvements but failed to **deliver** on its promises.
公司承诺了改进，但未能 **兑现** 承诺。
idiom

bite the dust

失败或被打败
Meaning
to fail or be defeated
Example
Several small startups **bit the dust** last year.
去年有几家小型初创公司**失败了**。
idiom

carry yourself with confidence

以自信和确定的方式行事
Meaning
to behave in a confident and assured way
Example
She always **carries herself with confidence** during meetings.
她在会议期间总是以自信的态度展示自己。
idiom

drop the ball

犯错或未做重要的事
Meaning
to make a mistake or fail to do something important
Example
I really **dropped the ball** by forgetting to send that important email.
我真的 **掉了球**，忘记了发送那封重要的电子邮件。
idiom

a glimpse into the future

对未来可能是怎样的一个小小暗示
Meaning
a small indication of what the future might be like
Example
This technology gives us **a glimpse into the future**.
这项技术给我们一个未来的瞥见。
idiom

The shot heard around the world

一个具有全球意义或影响的事件。
Meaning
An event with worldwide significance or impact.
Example
The invention of the internet was **the shot heard around the world** in communication.
互联网的发明是通信领域中具有全球影响的事件。
idiom

law-abiding citizen

一个总是遵守法律的人
Meaning
a person who always follows the law
Example
He is known as a **law-abiding citizen** in the community.
他在社区中被称为**守法公民**。
idiom

tee up

为容易执行准备某事
Meaning
to prepare something for easy execution
Example
I’ll **tee up** the slides so you can start on time.
我会准备幻灯片，以便你准时开始。
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

use up

完全消耗某物
Meaning
to consume something completely
Example
We’ve **used up** all the printer paper already.
我们已经用完了所有的打印纸。
idiom

hit the town

与朋友一起出去玩
Meaning
to go out and enjoy with friends
Example
Let’s **hit the town** tonight and celebrate!
今晚我们去外面玩，庆祝一下！
idiom

hold the fort

在某人离开时负责
Meaning
to be in charge while someone is away
Example
Can you **hold the fort** while I'm at the meeting?
我开会时你能负责一下吗？
idiom

raise the roof

制造很大的噪音；大声庆祝
Meaning
to make a lot of noise; to celebrate loudly
Example
The crowd **raised the roof** when the team won.
当球队获胜时，人群**欢呼得震耳欲聋**。
idiom

show leadership

展示领导才能或技能
Meaning
to demonstrate leadership qualities or skills
Example
She was able to **show leadership** during the crisis and guide the team through tough times.
她能够在危机期间**展示领导力**并引导团队度过艰难时期。
idiom

hardwired to do something

天生倾向或被编程以某种方式行事
Meaning
to be naturally inclined or programmed to behave a certain way
Example
Humans are **hardwired to** seek connection and belonging.
人类天生被编程去寻找联系和归属感。
idiom

Masterpiece

一件杰出的艺术或工艺作品。
Meaning
A work of outstanding artistry or craftsmanship.
Example
The sculpture he created is truly a **masterpiece**.
他创作的雕塑真是一件**杰作**。
idiom

break away

从小组或常规中分离
Meaning
to separate from a group or routine
Example
She plans to **break away** from the commute by working remotely twice a week.
她计划通过每周远程工作两次来**break away**通勤。
idiom

walking on eggshells

小心翼翼地避免惹恼某人
Meaning
being very careful not to upset someone
Example
I feel like I am **walking on eggshells** around my boss.
我觉得在老板面前我必须非常小心。
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

stay calm

保持冷静，不要惊慌
Meaning
to remain composed and not panic
Example
No need to worry, just **stay calm** and think it through.
不用担心，只要保持冷静，然后仔细想一想。
idiom

shake like a leaf

因害怕或紧张而颤抖
Meaning
to tremble with fear or nervousness
Example
She was **shaking like a leaf** before her first flight.
她在第一次飞行前**像叶子一样发抖**。
idiom

backseat driver

给出不必要的建议或方向的人
Meaning
a person who gives unwanted advice or direction
Example
Don't be a **backseat driver**, let me handle it.
别当**后座司机**，让我来处理吧。
idiom

kick around

非正式地讨论想法
Meaning
to discuss ideas informally
Example
We can **kick around** some concepts after lunch.
我们可以在午餐后讨论一些概念。
idiom

to fall head over heels

深深地爱上
Meaning
to fall deeply in love
Example
He **fell head over heels** for her the moment they met.
他**深深地爱上**了她，当他们见面时。
idiom

stand by someone

保持忠诚或支持
Meaning
to remain loyal or supportive
Example
True friends **stand by** each other in hard times.
真正的朋友在困难时期彼此支持。
idiom

give the benefit of the doubt

即使你没有所有的事实，仍然信任某人
Meaning
to trust someone even though you may not have all the facts
Example
Even though she was late, I decided to **give her the benefit of the doubt** and not get upset.
尽管她迟到了，我还是决定给她一个疑点的好处，不生气。
idiom

sandboxing

一种安全机制，用于在隔离的环境中运行应用程序，以防止对系统造成潜在的损害。
Meaning
A security mechanism used to run applications in an isolated environment to prevent potential damage to the system.
Example
By using **sandboxing**, the malware was contained and couldn't affect the rest of the system.
通过使用**沙盒技术**，恶意软件被遏制，无法影响系统的其余部分。
idiom

a window of opportunity

一个短暂的时期，在此期间可以有效地行动
Meaning
a short period when one has a chance to act effectively
Example
We have **a window of opportunity** to finalize the deal this week.
我们有**一个机会之窗**来完成这周的交易。
idiom

poetic justice

一种美德得到奖励，恶习受到惩罚的情况，通常是讽刺性的
Meaning
a situation in which virtue is rewarded and vice is punished, often ironically
Example
It was **poetic justice** when the dishonest lawyer lost his case due to his own lies.
当那个不诚实的律师因为自己的谎言而输掉案件时，这就是**诗意的正义**。
idiom

snap out of it

停止难过并开始感觉好一点
Meaning
to stop being upset and start feeling better
Example
You need to **snap out of it** and start thinking positively.
你需要振作起来并开始积极思考。
idiom

ease up

变得不那么强烈或放松
Meaning
to become less intense or to relax
Example
The rain should **ease up** by the evening commute.
雨水应该在晚高峰前**减弱**。
idiom

keep the momentum

保持势头
Meaning
to continue progressing without slowing down
Example
We need to **keep the momentum** to reach our target.
我们需要保持势头以实现我们的目标。
idiom

to tip the scales

影响局势的结果
Meaning
to influence the outcome of a situation
Example
One witness’s statement **tipped the scales** in favor of the defendant.
一个证人的证词**影响了结果**，使被告获胜。
idiom

to fall flat on one's face

完全失败或让自己丢脸
Meaning
to fail completely or embarrass oneself
Example
The comedian **fell flat on his face** when no one laughed.
当没有人笑时，喜剧演员**跌得脸朝下**。
idiom

political football

一个不断争论的问题，且被用于政治利益
Meaning
an issue that is constantly debated and used for political gain
Example
The issue of immigration has become a **political football**, with both parties using it to score points.
移民问题已成为一个**政治足球**，双方都在利用它来得分。
idiom

zone off

将区域划分为若干部分
Meaning
to divide an area into sections
Example
They’ll **zone off** part of the hall for workshops.
他们将为工作坊划分大厅的一部分。
idiom

gain ground

取得进展或前进
Meaning
to make progress or advance
Example
The company has been **gaining ground** in the tech industry.
该公司在科技行业**取得进展**。
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

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

have a high opinion of yourself

认为自己非常好或重要
Meaning
to think you are very good or important
Example
He **has a high opinion of himself** after getting the award.
他在获得奖项后对自己有很高的评价。
idiom

encrypted

数据已转换为安全格式，以防止未经授权的访问
Meaning
data that is converted into a secure format to prevent unauthorized access
Example
All sensitive communications are **encrypted** to ensure privacy.
所有敏感通信都已**加密**以确保隐私。
idiom

can of worms

一个复杂的问题，一旦开始，可能会引发更多麻烦
Meaning
a complex problem that may cause more trouble once started
Example
AI bias is a **can of worms** that’s hard to fix.
AI偏见是一个**can of worms**，很难解决。