ace a test
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idiom

ace a test

在考试中表现极好
Meaning
to do extremely well on a test
Example
He studied hard and managed to **ace the test**.
他努力学习，并成功地 **通过了考试**。
idiom

a ray of hope

可能成功或改善的一个小迹象
Meaning
a small sign of possible success or improvement
Example
The new treatment gave patients **a ray of hope**.
新的治疗给患者带来了**希望的光芒**。
idiom

a clear conscience

一种没有罪恶感或后悔的状态
Meaning
a state of being free from guilt or regret
Example
She could sleep soundly at night because she had **a clear conscience**.
她晚上能安然入睡，因为她有一颗清白的良心。
idiom

A Pandora’s box

无尽麻烦或复杂问题的来源。
Meaning
A source of endless complications or trouble.
Example
Discussing that topic will open a **Pandora’s box** of complaints.
讨论那个话题会打开一个潘多拉的盒子，引发很多抱怨。
idiom

a million-dollar smile

一个美丽而迷人的微笑
Meaning
a beautiful and charming smile
Example
She greeted everyone with **a million-dollar smile**.
她用百万美元的微笑迎接了每一个人。
idiom

a cold war

没有公开战争的政治敌对状态
Meaning
a state of political hostility without open warfare
Example
The two nations seem to be entering **a cold war** again.
这两个国家似乎又进入了一场冷战。
idiom

A solid foundation

一个强大且可靠的基础或起点。
Meaning
A strong and reliable base or starting point.
Example
The success of this company is built on a **solid foundation** of hard work and dedication.
这家公司的成功建立在**坚实的基础**上，靠的是辛勤工作和奉献精神。
idiom

a ray of sunshine

给人带来幸福的人或事
Meaning
someone or something that brings happiness
Example
Her smile is **a ray of sunshine** on a gloomy day.
她的笑容是**阴暗日子里的阳光**。
idiom

A bundle of nerves

极度焦虑或紧张。
Meaning
To be extremely anxious or tense.
Example
Before the presentation, she was **a bundle of nerves**.
在演讲之前，她是 **一团神经**。
idiom

a rock in a hard place

处于非常困难或具有挑战性的情况
Meaning
to be in a very difficult or challenging situation
Example
He found himself **a rock in a hard place** when he had to choose between two difficult options.
当他必须在两个困难的选项之间做出选择时，他发现自己身处**a rock in a hard place**。
idiom

a drama queen

一个夸大其词或对情况过度反应的人
Meaning
someone who exaggerates or overreacts to situations
Example
Stop acting like **a drama queen**; it’s not that serious.
别像一个戏剧女王一样表现; 事情没有那么严重。
idiom

as fresh as a daisy

精力充沛，一点也不累
Meaning
full of energy and not tired
Example
Even after the hike, she looked **as fresh as a daisy**.
即使徒步旅行之后，她看起来仍然像雏菊一样清新。
idiom

a snake in the grass

一个秘密的敌人
Meaning
a secret enemy
Example
Be careful; there’s **a snake in the grass**.
小心；草丛里有一个秘密敌人。
idiom

AI accountability

开发者和组织的责任是确保人工智能系统公平、安全和道德地运作。
Meaning
the responsibility of developers and organizations to ensure AI systems act fairly, safely, and ethically.
Example
Ensuring **AI accountability** is essential to avoid harmful consequences in society.
确保**AI 责任**对于避免社会中有害的后果至关重要。
idiom

addiction to something

强烈且有害的做某事或使用某物的需求
Meaning
a strong and harmful need to do or use something
Example
He is struggling with his **addiction to smoking**.
他在与他的**吸烟成瘾**作斗争。
idiom

a roller coaster of emotions

经历强烈且波动的情感
Meaning
experiencing intense and fluctuating emotions
Example
Her life has been **a roller coaster of emotions** since the accident.
自从事故以来，她的生活就像一场情感过山车。
idiom

a wolf in sheep's clothing

看起来无害但实际上很危险的人
Meaning
someone who appears harmless but is actually dangerous
Example
He was **a wolf in sheep's clothing**.
他是披着羊皮的狼。
idiom

a blank canvas

可以自由发展的一个人或情况
Meaning
a person or situation that can be developed freely
Example
Starting a new project is like working with **a blank canvas**.
开始一个新项目就像与**一张空白画布**一起工作。
idiom

As cool as a cucumber

非常冷静和放松。
Meaning
Very calm and relaxed.
Example
Even in stressful situations, she stays **as cool as a cucumber**.
即使在紧张的情况下，她也能保持镇定自若。
idiom

A negative outlook

悲观的态度或观点
Meaning
A pessimistic attitude or perspective
Example
He always has **a negative outlook** on life.
他对生活总是持悲观态度。
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

a long shot

成功机会很小的事情
Meaning
something that has a very small chance of success
Example
Winning the competition is **a long shot**, but we’ll try.
赢得比赛的可能性很小，但我们会试试。
idiom

a smart cookie

一个非常聪明或有智慧的人
Meaning
a very clever or intelligent person
Example
Don’t underestimate her; she’s **a smart cookie**.
不要低估她; 她是 **一个聪明的饼干**。
idiom

a run on the bank

由于担心银行倒闭，许多人从银行提取他们的钱
Meaning
a situation where many people withdraw their money from a bank due to fear of collapse
Example
Rumors of insolvency caused **a run on the bank**.
破产的传闻引发了**银行挤兑**。
idiom

an apple a day keeps the doctor away

健康的饮食有助于保持健康
Meaning
eating healthy food helps you stay well
Example
My mom always says, '**An apple a day keeps the doctor away**.'
我妈妈总是说，'每天一个苹果能让医生远离。'
idiom

a mind like a sieve

记忆力非常差
Meaning
to have a very bad memory
Example
He forgets everything; he has **a mind like a sieve**.
他什么都忘了；他的记忆力像筛子一样。
idiom

a workaholic

一个工作过度且很难停止的人
Meaning
a person who works too much and finds it hard to stop
Example
He’s such **a workaholic**, even on weekends he works.
他是个**工作狂**，即使是周末也在工作。
idiom

act on

根据信息采取行动
Meaning
to respond to information with action
Example
We need to **act on** the survey results immediately.
我们需要立即对调查结果采取行动。
idiom

A flash of inspiration

突如其来的创意
Meaning
A sudden creative idea
Example
He had **a flash of inspiration** while working late at night.
他在深夜工作时有了**灵感的闪现**。
idiom

all smiles

非常开心和愉快
Meaning
very happy and cheerful
Example
He was **all smiles** after hearing the compliment.
听到赞美后，他笑容满面。
idiom

A red herring

一个误导性的线索或分散注意力的事物，目的是转移对真正问题的注意。
Meaning
A misleading clue or distraction intended to divert attention from the real issue.
Example
The new law was just a **red herring** to distract from the corruption scandal.
新法律只是一个分散注意力的事物，用来转移对腐败丑闻的注意。
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

a fair trial

一个所有方都被平等和公正对待的审判
Meaning
a trial where all sides are treated equally and justly
Example
The defendant demanded **a fair trial** to prove his innocence.
被告要求**一个公正的审判**来证明他的无辜。
idiom

a daydreamer

一个花很多时间想着愉快事情而不是工作的人的人
Meaning
someone who spends a lot of time thinking about pleasant things rather than working
Example
She’s **a daydreamer** who often forgets what she’s doing.
她是一个**白日梦者**，经常忘记自己在做什么。
idiom

a work in progress

仍在开发或改进中的事物
Meaning
something that is still being developed or improved
Example
The project is still **a work in progress**, but it's going well.
该项目仍在进行中，但进展良好。
idiom

a few bricks short of a load

有点愚蠢或疯狂
Meaning
a little stupid or crazy
Example
He tries hard, but he’s **a few bricks short of a load**.
他努力尝试，但他是**有点愚蠢或疯狂**。
idiom

an out of this world experience

一种非凡或特殊的经历
Meaning
an extraordinary or exceptional experience
Example
The view from the space station was truly **an out of this world experience**.
从空间站看到的景象真是**一种超凡的经历**。
idiom

A thirst for knowledge

渴望学习新事物。
Meaning
A strong desire to learn new things.
Example
He has **a thirst for knowledge** and reads constantly.
他有**对知识的渴望**，并且不断阅读。
idiom

a bumper crop

异常丰收
Meaning
an unusually large harvest
Example
Farmers are happy this year because of **a bumper crop** of rice.
农民们今年很高兴，因为**丰收的稻米**。
idiom

A pretty picture

一个愉快或理想的情况；通常用于讽刺
Meaning
A pleasant or ideal situation; often used ironically
Example
This isn’t **a pretty picture** – we need to fix these problems.
这不是**一幅美丽的画面** – 我们需要解决这些问题。
idiom

a weak link

系统或小组中最不可靠或最不安全的部分
Meaning
the least reliable or secure part of a system or group
Example
One careless employee can be **a weak link** in the security chain.
一个不小心的员工可能是安全链中的**薄弱环节**。
idiom

a lightbulb moment

一个突然的意识或理解
Meaning
a sudden realization or understanding
Example
When I saw the results, I had a **lightbulb moment**.
当我看到结果时，我有一个**灯泡时刻**。
idiom

a pain in the neck

令人非常烦的人或事
Meaning
someone or something that is very annoying
Example
That constant noise from the construction site is **a pain in the neck**.
来自建筑工地的持续噪音真让人烦。
idiom

A Trojan horse

旨在从内部秘密破坏或造成伤害的东西。
Meaning
Something intended to secretly undermine or bring harm from within.
Example
The malware acted as **a Trojan horse**, allowing hackers access to private data.
该恶意软件充当了特洛伊木马，使黑客能够访问私人数据。
idiom

A bright future lies ahead

未来充满成功的希望
Meaning
there is hope for success in the future
Example
With his talent and hard work, **a bright future lies ahead** for him.
凭借他的才华和努力工作，**他有一个光明的未来在等待**。
idiom

a little bird told me

有人悄悄告诉我某些事情
Meaning
someone told me something secretly
Example
A **little bird told me** that you got a new job.
一只**小鸟告诉我**你找到了新工作。
idiom

a masterpiece

一件杰出的艺术作品或成就
Meaning
an outstanding work of art or achievement
Example
Her latest sculpture is truly **a masterpiece**.
她的最新雕塑真的是**一件杰作**。
idiom

a weight off your shoulders

从处理压力情境后的解脱
Meaning
relief after dealing with a stressful situation
Example
Finishing the project felt like **a weight off my shoulders**.
完成这个项目就像把肩上的重担卸下来。
idiom

a trip down memory lane

回忆过去美好的事情
Meaning
to remember pleasant events from the past
Example
Looking through old photos was **a trip down memory lane**.
看着旧照片是一趟回忆之旅。
idiom

artificial intelligence

机器中人类智能的模拟，编程使其能够思考和学习。
Meaning
The simulation of human intelligence in machines that are programmed to think and learn.
Example
The company has invested heavily in **artificial intelligence** to enhance automation.
公司已经在**人工智能**方面进行了大量投资，以增强自动化。
idiom

a shoulder to cry on

当你难过时，能听你倾诉并支持你的人
Meaning
someone who listens and supports you when you are sad
Example
She has always been **a shoulder to cry on** when I needed help.
当我需要帮助时，她总是**一个可以哭诉的肩膀**。
idiom

act out

通过行动来表现或表达情感
Meaning
to perform or express emotions through actions
Example
Children often **act out** their frustrations.
孩子们经常通过行动来表现他们的挫折感。
idiom

apology accepted

用于表示你原谅某人
Meaning
used to say that you forgive someone
Example
Don’t worry, **apology accepted**.
别担心，原谅了
idiom

a blank slate

一个没有任何先前知识或经验的人
Meaning
a person with no prior knowledge or experience
Example
He came to the school like a **blank slate**.
他像一张**空白纸**一样来到学校。
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

a ticking time bomb

一个随时可能变得危险的情况或人。
Meaning
A situation or person that could become dangerous at any moment.
Example
His anger issues make him **a ticking time bomb**.
他的愤怒问题让他成为一颗定时炸弹。
idiom

a turning point

一个重要变化发生的时刻
Meaning
a moment when an important change happens
Example
Graduating from college was a **turning point** in his life.
从大学毕业是他人生中的一个**转折点**。
idiom

A Faustian bargain

为权力或成功而牺牲道德完整性的交易。
Meaning
A deal where one sacrifices moral integrity for power or success.
Example
Signing that contract was **a Faustian bargain** for him.
签署那份合同对他来说是一个福斯蒂安交易。
idiom

Air time

在电视或广播中播放的时间
Meaning
The amount of time something is broadcast on TV or radio
Example
The charity event got a lot of **air time** on local stations.
慈善活动在当地电台获得了很多空中时间。
idiom

a storm in a teacup

一个被夸大的小问题
Meaning
a small problem that is exaggerated
Example
Their argument was just **a storm in a teacup**.
他们的争论只是**茶杯里的风暴**。
idiom

a rollercoaster of emotions

在短时间内经历非常高和非常低的情绪状态
Meaning
to experience very high and very low emotional states in a short time
Example
The week was **a rollercoaster of emotions**, with moments of joy and sadness.
这一周是**一个情绪过山车**，充满了快乐和悲伤的时刻。
idiom

a no-brainer

非常容易理解或决定的事情
Meaning
something that is very easy to understand or decide
Example
The solution to the problem was **a no-brainer**.
问题的解决方案是**非常简单的**。
idiom

a sound bite

演讲或采访中简短、易记的部分，常用于媒体
Meaning
a short, memorable part of a speech or interview often used in the media
Example
The politician's **sound bite** was replayed on every major news channel.
政治家的**摘录**在所有主要新闻频道上重复播放。
idiom

a stroke of genius

一个辉煌和富有创意的想法
Meaning
a brilliant and creative idea
Example
Her design was **a stroke of genius**.
她的设计是**天才之作**。
idiom

a power play

一个战略举措以获得对局势的控制或影响
Meaning
a strategic move to gain control or influence over a situation
Example
His decision to challenge the leader was a clear **power play**.
他挑战领导者的决定是一个明显的 **力量操作**。
idiom

Ahead of one’s time

拥有过于先进的想法或态度，超越了当下的时代。
Meaning
Having ideas or attitudes that are too advanced for the present.
Example
Her designs were ahead of her time.
她的设计超越了她的时代。
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

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

a shot in the arm

给人鼓励或能量的东西
Meaning
something that gives encouragement or energy
Example
The new funding was **a real shot in the arm** for the project.
新的资金对项目来说是**真正的强心针**。
idiom

A golden opportunity

做某事的一个非常好的机会
Meaning
a very good chance to do something
Example
Getting this scholarship is **a golden opportunity** for you.
获得这个奖学金对你来说是**一个黄金机会**。
idiom

a heart-to-heart

一次真诚和开放的对话
Meaning
a sincere and open conversation
Example
We had **a heart-to-heart** about our future plans.
我们就我们的未来计划进行了**一次真诚的对话**。
idiom

a brainwave

一个突然聪明的主意或解决方案
Meaning
a sudden clever idea or solution
Example
I had **a brainwave** and realized how to fix the issue.
我有了**一脑波**，并意识到如何解决这个问题。
idiom

after the storm comes the calm

风暴之后是平静
Meaning
peace follows a period of trouble
Example
Stay patient; **after the storm comes the calm**.
保持耐心；**风暴过后，平静来临**。
idiom

ahead of its time

在当时显得异常先进或创新
Meaning
to be unusually advanced or innovative for its era
Example
That invention was **ahead of its time**.
那个发明超越了它所处的时代。
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

a fine line

两者之间的差异非常小
Meaning
a very small difference between two things
Example
There’s **a fine line** between genius and madness in art.
在艺术中，天才和疯狂之间有**一条细线**。
idiom

at the end of your rope

极度沮丧，已没有耐心
Meaning
to be extremely frustrated and have no patience left
Example
After dealing with delays all day, she was **at the end of her rope**.
在整天应对延迟之后，她已经到了极限。
idiom

a mind is a terrible thing to waste

不使用你的智力是一种浪费
Meaning
it is a waste not to use your mental abilities
Example
You should keep learning, **a mind is a terrible thing to waste**.
你应该继续学习，**思想是一种可怕的浪费**。
idiom

a barrel of laughs

某人或某事非常有趣或娱乐性强
Meaning
someone or something very funny or entertaining
Example
The new comedy show is **a barrel of laughs**.
新的喜剧节目非常有趣。
idiom

a spark of genius

一个突然和杰出的想法
Meaning
a sudden and brilliant idea
Example
Her **spark of genius** helped us solve the problem quickly.
她的**天才火花**帮助我们迅速解决了问题。
idiom

a cog in the machine

大型系统中的一个小而重要的部分
Meaning
a small but essential part of a large system
Example
Every engineer is **a cog in the machine** that keeps the factory running.
每个工程师都是**机器中的一颗齿轮**，帮助工厂运转。
idiom

a flash in the pan

一开始看起来有希望但最终失败的东西
Meaning
something that seems promising at first but fails to deliver
Example
The peace talks were just **a flash in the pan**.
和平谈判只是**昙花一现**。
idiom

adapt to the changing times

适应新的条件或环境
Meaning
to adjust to new conditions or circumstances
Example
In order to survive in this fast-paced world, you must **adapt to the changing times**.
为了在这个快节奏的世界中生存，你必须**适应变化的时代**。
idiom

air gap

安全与不安全系统之间的物理隔离
Meaning
a physical separation between secure and insecure systems
Example
Critical networks are kept **air-gapped** to prevent unauthorized access.
关键网络被**气隔离**以防止未经授权的访问。
idiom

A rising tide lifts all boats

当经济改善时，每个人都会在某种程度上受益。
Meaning
When the economy improves, everyone benefits to some extent.
Example
When the new policies boosted trade, people said that **a rising tide lifts all boats**.
当新政策促进了贸易时，人们说：“水涨船高”。
idiom

at the top of one’s game

处于最佳状态
Meaning
to be performing at one’s best level
Example
The athlete is **at the top of his game** this season.
这位运动员本赛季处于最佳状态。
idiom

a thing of the past

不再存在或发生的事情
Meaning
something that no longer exists or happens
Example
With smartphones, landline phones are **a thing of the past**.
有了智能手机，座机电话成了**过去的事情**。
idiom

at loggerheads

在强烈的分歧或冲突中
Meaning
in strong disagreement or conflict
Example
The two departments have been **at loggerheads** over the new policy.
这两个部门在新政策上存在强烈的分歧。
idiom

a leopard can't change its spots

一个人不能改变他们与生俱来的本性或特征
Meaning
someone cannot change their inherent nature or characteristics
Example
No matter how hard he tries, **a leopard can't change its spots**.
不管他怎么努力，一只豹子不能改变它的斑点。
idiom

a thorn in the flesh

一些或某人造成持续的麻烦或烦恼
Meaning
something or someone that causes continuous trouble or annoyance
Example
The new regulations have been **a thorn in the flesh** for small business owners.
新规定对小企业主来说已经成为了**肉中的刺**。
idiom

answer for

对某事负责，并就此向他人解释
Meaning
to be responsible for something and answer to others about it
Example
She had to **answer for** the mistakes made by her team.
她必须为她团队所犯的错误**负责**。
idiom

a crash course

短期强化学习课程
Meaning
a short and intensive course of study
Example
I had to take a **crash course** in programming before starting the job.
在开始工作之前，我不得不参加一个编程**速成课程**。
idiom

a penny saved is a penny earned

节省钱就像赚取钱一样有价值
Meaning
saving money is just as valuable as earning it
Example
My grandfather always said, '**a penny saved is a penny earned**.'
我的祖父总是说，'一分钱省下就是一分钱赚到。'
idiom

a work of art

非常美丽或巧妙制作的东西
Meaning
something very beautiful or skillfully made
Example
Her wedding dress was truly **a work of art**.
她的婚纱真的是**一件艺术品**。
idiom

a lawyer's brief

一个摘要或简明陈述一个论点或案件
Meaning
a summary or concise statement of an argument or case
Example
The **lawyer's brief** was submitted to the judge before the trial began.
**律师的摘要** 在审判开始前提交给法官。
idiom

Ask the right questions

提出正确的问题以获得理解。
Meaning
To inquire wisely to gain understanding.
Example
Good researchers always **ask the right questions**.
好的研究者总是问对问题。
idiom

a universe of possibilities

无尽的机会或选择
Meaning
endless opportunities or options
Example
Technology has opened **a universe of possibilities**.
技术开启了**无限的可能性**。
idiom

artificial genius

由人类创造的极其聪明的系统
Meaning
an exceptionally smart system created by humans
Example
Chatbots have become the face of **artificial genius**.
聊天机器人已成为人工智慧的代表。
idiom

a man of faith

一个坚信某个宗教或原则的人
Meaning
a person who strongly believes in a particular religion or principle
Example
He is known as **a man of faith** in his community.
他在他的社区被称为**信仰之人**。
idiom

a chatterbox

一个说很多话的人，特别是一个孩子
Meaning
someone who talks a lot, especially a child
Example
My little sister is **a chatterbox**; she never stops talking.
我的妹妹是 **话痨**；她从不停止说话。
idiom

a fresh start

在困难或错误之后的全新开始
Meaning
a new beginning after difficulties or mistakes
Example
After the breakup, she wanted **a fresh start**.
分手后，她想要一个全新的开始。
idiom

age before beauty

幽默地用来让年长的人先行
Meaning
used humorously to let an older person go first
Example
He opened the door and said, '**Age before beauty**,' letting his grandmother enter first.
他打开门说：“**年龄先于美貌**”，让他的奶奶先进去。
idiom

A little knowledge is a dangerous thing

了解一点事情可能会导致错误。
Meaning
Knowing a small amount about something can lead to mistakes.
Example
**A little knowledge is a dangerous thing** — don’t try to fix it if you’re not an expert.
**一点知识是一件危险的事** — 如果你不是专家，别尝试修理它。
idiom

a snowball's chance in hell

完全没有机会
Meaning
no chance at all
Example
He has **a snowball's chance in hell** of winning the lottery.
他没有赢得彩票的机会。
idiom

ask around

向多个人询问
Meaning
to inquire with several people
Example
I’ll **ask around** to see who can cover the shift.
我会 **向多个人询问** 看谁能替我顶班。
idiom

artificial neural network

一种人工智能系统，旨在模仿人脑识别模式和解决问题的能力。
Meaning
an AI system designed to mimic the human brain's ability to recognize patterns and solve problems.
Example
The **artificial neural network** is capable of processing data in a way similar to the human brain.
该**人工神经网络**能够以类似人脑的方式处理数据。
idiom

a rip-off

太贵或不值这个价格的东西
Meaning
something that is too expensive or not worth its price
Example
That restaurant is **a rip-off**; the food is not worth the money.
那家餐厅太坑人了；食物不值那个价钱。
idiom

a debt of gratitude

对帮助过你的人心存感激的感觉
Meaning
a feeling of being grateful to someone who has helped you
Example
We owe **a debt of gratitude** to our mentors.
我们对我们的导师欠有**一笔感激之债**
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

a piece of cake

非常容易做的事情
Meaning
something that is very easy to do
Example
The exam was **a piece of cake** for me.
这次考试对我来说是**小菜一碟**。
idiom

a brave face

假装勇敢，尽管你实际上感到害怕或担心
Meaning
to pretend to be brave when you are actually scared or worried
Example
She put on **a brave face** despite feeling nervous inside.
她戴上了**勇敢的面容**，尽管内心感到紧张。
idiom

at war with oneself

内心挣扎或冲突
Meaning
to be conflicted or struggling internally
Example
She is **at war with herself** about the decision to move abroad.
她在**与自己作战**，关于是否搬到国外的决定。
idiom

as honest as the day is long

完全诚实和值得信赖
Meaning
completely honest and trustworthy
Example
Everyone knows that Tom is **as honest as the day is long**.
每个人都知道汤姆是**像白天一样诚实**。
idiom

a tough call

nán de juédìng
Meaning
a difficult decision to make
Example
Choosing between the two offers was **a tough call**.
Zài liǎng gè tíyì zhī jiān xuǎnzé shì nán de juédìng.
idiom

a learning curve

学习新事物的过程，尤其是需要时间和努力的过程
Meaning
the process of learning something new, especially one that requires time and effort
Example
There was a steep **learning curve** when I first started the project.
当我开始这个项目时，有一个陡峭的学习曲线。
idiom

a bitter pill to swallow

一个难以接受的不愉快事实或情况
Meaning
an unpleasant fact or situation to accept
Example
Losing the championship was **a bitter pill to swallow** for the team.
输掉冠军对团队来说是一个难以接受的事实。
idiom

a full plate

非常忙或有很多事情要做
Meaning
to be very busy or have many things to do
Example
I can’t join the trip now; I’ve got **a full plate**.
我现在不能参加旅行；我有**很多事情要做**。
idiom

ahead of the curve

比别人更先进或创新
Meaning
to be more advanced or innovative than others
Example
Their company is **ahead of the curve** in AI development.
他们的公司在人工智能开发中领先。
idiom

A bird in the hand is worth two in the bush

拥有的东西比冒险失去它去争取更好的东西要好。
Meaning
It’s better to hold onto something you have than risk losing it by trying to get something better.
Example
I decided to keep the job offer I already have because **a bird in the hand is worth two in the bush**.
我决定保留我已经收到的工作邀请，因为**一鸟在手胜过两鸟在林**。
idiom

a trusted ally

一个可以信任并且可靠的人或团体
Meaning
a person or group that is trusted and reliable
Example
She has always been **a trusted ally** in our business ventures.
她一直是我们商业计划中的**一个可信赖的盟友**。
idiom

a blast from the past

某些让你想起过去的事物
Meaning
something that reminds you of an earlier time
Example
Seeing that old photo album was **a blast from the past**.
看到那本旧相册真的是**来自过去的爆炸**。