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

set aside

为特定目的保留某物
Meaning
to reserve something for a particular purpose
Example
We should **set aside** some money for unexpected expenses.
我们应该为突发开支预留一些钱。
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

couldn’t care less

表现出完全的冷漠
Meaning
to show total indifference
Example
She **couldn’t care less** about what people think.
她对别人怎么想完全不在乎。
idiom

Make a move

采取行动或开始做某事
Meaning
to take action or start doing something
Example
If you want success, it’s time to **make a move**.
如果你想要成功，现在是采取行动的时候了。
idiom

tie the knot

结婚
Meaning
to get married
Example
They are planning to **tie the knot** next summer.
他们计划在明年夏天**结婚**。
idiom

separate the wheat from the chaff

区分有价值和无价值的东西
Meaning
to distinguish valuable things from worthless ones
Example
It’s time to **separate the wheat from the chaff** in this project.
现在是时候在这个项目中**将麦子和糠分开**了。
idiom

put one's foot in one's 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 ex-boyfriend.
当他提到她的前男友时，他真的是把脚放进了嘴里。
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

lean on

依赖某人提供支持
Meaning
to depend on someone for support
Example
You can always **lean on** me when things get tough.
当事情变得艰难时，你可以随时依赖我。
idiom

new kid on the block

某个地方或情况中的新人
Meaning
someone new to a place or situation
Example
He’s the **new kid on the block** in the company.
他是公司里的新人。
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

go by the book

严格遵循规则
Meaning
to follow rules or procedures strictly
Example
The officer always **goes by the book** during inspections.
这名官员在检查期间总是严格遵循规则。
idiom

circle back

稍后返回到一个话题或任务
Meaning
to return to a topic or task later
Example
Let's **circle back** to this issue after lunch.
我们午餐后再回到这个问题。
idiom

Pay dividends

稍后带来好处或奖励。
Meaning
To bring benefits or rewards later.
Example
Investing in education always **pays dividends** in the long run.
投资教育总是在长期中获得回报。
idiom

smell a rat

怀疑某事不对或不诚实
Meaning
to suspect something wrong or dishonest
Example
I **smelled a rat** when he offered me free tickets.
当他给我免费票时，我感觉不对劲。
idiom

double-edged sword

有利也有弊的事物
Meaning
something that has both positive and negative consequences
Example
AI surveillance is a **double-edged sword** for security and privacy.
人工智能监控对于安全和隐私来说是一把**双刃剑**。
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 global village

由于科技和通信，世界被视为一个单一的社区
Meaning
the world considered as a single community due to technology and communication
Example
The internet has turned the world into **a global village**.
互联网把世界变成了一个全球村。
idiom

cut a deal

迅速达成商业协议
Meaning
to reach a business agreement quickly
Example
They **cut a deal** to save both companies money.
他们**达成了协议**，为两家公司节省资金。
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

once in a blue moon

非常罕见
Meaning
very rarely
Example
I only see him **once in a blue moon**.
我很少见到他。
idiom

At a snail’s pace

非常慢。
Meaning
Very slowly.
Example
The traffic was moving **at a snail’s pace**.
交通以**蜗牛的速度**行驶。
idiom

get along with

与某人有良好的关系
Meaning
to have a good relationship with someone
Example
I really **get along with** my coworkers.
我真的和我的同事相处得很好。
idiom

hit it out of the park

把事情做得非常好
Meaning
to do something extremely well
Example
Your presentation really **hit it out of the park**!
你的演讲真的非常出色！
idiom

give someone a piece of one’s mind

愤怒地告诉某人你的想法
Meaning
to tell someone angrily what you think
Example
She **gave him a piece of her mind** for being rude.
她因为他粗鲁而愤怒地训了他一顿。
idiom

measure up

达到预期的标准
Meaning
to meet expected standards
Example
The new hire has to **measure up** to the team’s standards.
新员工必须达到团队的标准。
idiom

bring home the bacon

赚取钱财养家
Meaning
to earn money to support the family
Example
He works hard every day to **bring home the bacon**.
他每天努力工作，以便赚取钱财养家。
idiom

learn your lesson

从不愉快的经历中吸取教训，以避免重复
Meaning
to learn from an unpleasant experience so as not to repeat it
Example
After being late several times, he finally **learned his lesson**.
在多次迟到后，他终于**吸取了教训**。
idiom

on the go

总是忙碌或活跃；经常旅行
Meaning
always busy or active; traveling a lot
Example
She's always **on the go** with her work trips.
她总是忙于工作旅行。
idiom

a vision for the future

关于未来应该发生什么的清晰想法或计划
Meaning
a clear idea or plan about what should happen in the future
Example
The CEO has **a vision for the future** of the company that will guide its growth.
CEO 对公司未来的 **未来愿景** 将指导其增长。
idiom

to backfire

得到与预期相反的结果
Meaning
to have the opposite result of what was intended
Example
His plan **backfired** and made things worse.
他的计划失败了，使情况变得更糟。
idiom

be above board

以诚实和公开的方式行事
Meaning
to act in an honest and open manner
Example
She is always **above board** in all her dealings.
她在所有的交易中总是**诚实**。
idiom

mud-slinging

批评某人，尤其是在政治中，旨在破坏其声誉的行为
Meaning
the act of criticizing someone, especially in politics, to harm their reputation
Example
The debate turned into **mud-slinging** very quickly.
辩论很快变成了相互指责。
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

The Scarlet Letter

羞耻或社会污名的象征。
Meaning
A symbol of shame or social stigma.
Example
In that conservative town, being divorced was like wearing **a Scarlet Letter**.
在那个保守的小镇，离婚就像戴着红字一样。
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

a job well done

一项成功完成的任务
Meaning
a task completed with great success
Example
The project was completed ahead of schedule, truly **a job well done**.
项目提前完成，真的**做得很好**。
idiom

run in the family

一个许多家庭成员共享的特征
Meaning
a characteristic that many members of a family share
Example
Good looks **run in the family** — all of them are beautiful!
好看是**run in the family** — 他们都很漂亮！
idiom

go separate ways

结束一段关系或伙伴关系
Meaning
to end a relationship or partnership
Example
After ten years together, they decided to **go separate ways**.
十年后，他们决定**各走各的路**。
idiom

learn from your mistakes

利用过去错误的经验来改善未来的行为
Meaning
to use the experience of past errors to improve future behavior
Example
Everyone makes errors, but wise people **learn from their mistakes**.
每个人都会犯错误，但聪明的人**从错误中学习**。
idiom

dodged a bullet

侥幸逃脱危险或不幸的情况。
Meaning
To narrowly escape a dangerous or unlucky situation.
Example
We really **dodged a bullet** when that deal fell through.
当那笔交易失败时，我们真的侥幸逃脱了。
idiom

go back on one's word

不做自己说过会做的事情
Meaning
to not do what one said one would do
Example
He **went back on his word** about helping me.
他没有履行关于帮助我的承诺。
B1 idiom

all ears

非常专心地听
Meaning
Listening very attentively
Example
When the teacher started explaining the concept, the students were all ears.
当老师开始解释这个概念时，学生们都非常专心地听着。
idiom

pair off

组成两人一组
Meaning
to form groups of two
Example
Students will **pair off** for the lab experiment.
学生将**配对**进行实验。
idiom

soft power

一个国家通过文化或价值观而不是武力影响他人的能力
Meaning
a country's ability to influence others through culture or values rather than force
Example
Japan uses **soft power** to promote its culture worldwide.
日本利用**软实力**在全球推广其文化。
idiom

keep on track

按照计划继续做某事
Meaning
to continue doing something as planned
Example
We need to **keep on track** to meet our deadlines.
我们需要**保持进度**以赶上最后期限。
idiom

lose your train of thought

忘记自己在想什么或在说什么
Meaning
to forget what you were thinking or saying
Example
I **lost my train of thought** when the phone rang.
电话响的时候，我忘了自己在想什么。
idiom

pick holes in something

挑剔某事，尤其是当它不必要时
Meaning
to find faults in something, especially when it’s not necessary
Example
He loves **picking holes** in everyone else’s ideas.
他喜欢**挑剔**每个人的想法。
idiom

brainstorm ideas

思考新的和创造性的想法
Meaning
to think of new and creative ideas
Example
The class gathered to **brainstorm ideas** for the science project.
班级聚集在一起为科学项目生成创意。
idiom

face a system error

经历突然的故障或崩溃
Meaning
to experience a sudden failure or breakdown
Example
Our plans **faced a system error** when the deal was canceled.
当交易被取消时，我们的计划**遇到了系统错误**。
idiom

open up about

分享个人的想法或感受
Meaning
to share personal thoughts or feelings
Example
He finally **opened up about** the project stress.
他终于谈到了项目压力。
idiom

Keep one’s eye on the ball

专注于实现目标。
Meaning
To stay focused on achieving a goal.
Example
If you **keep your eye on the ball**, you’ll surely succeed.
如果你专注于目标，你一定会成功。
idiom

fingers crossed

希望好运或好的结果
Meaning
hoping for good luck or a good result
Example
I have my **fingers crossed** for your exam results.
我为你的考试结果祈祷。
idiom

opt in

选择参与
Meaning
to choose to participate
Example
Employees can **opt in** to the wellness program.
员工可以选择参与健康项目。
idiom

Put your trust in God

依靠对上帝的信仰来指导或帮助你。
Meaning
To rely on faith in God to guide or help you.
Example
In difficult times, she chooses to **put her trust in God**.
在困难时刻，她选择**把她的信任寄托于上帝**。
idiom

keep up with the times

保持更新或适应现代趋势
Meaning
to stay updated or adapt to modern trends
Example
In the fast-moving tech industry, companies must **keep up with the times**.
在快速发展的科技行业中，公司必须跟上时代的步伐。
idiom

laugh your head off

笑得前仰后合
Meaning
to laugh very loudly or uncontrollably
Example
The movie was so funny that we **laughed our heads off**.
这部电影太搞笑了，以至于我们笑得前仰后合。
idiom

ghost in the machine

系统或人中的神秘或无法解释的力量
Meaning
a mysterious or unexplained force in a system or person
Example
There must be a **ghost in the machine** causing these AI errors.
肯定有一个**机器中的鬼魂**导致这些AI错误。
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

bottle up your feelings

隐藏或压抑你的情感
Meaning
to hide or suppress your emotions
Example
Don't **bottle up your feelings**; talk about them.
不要**压抑你的情感**；谈论它们。
idiom

lay out

清楚地安排或解释某事
Meaning
to arrange or explain something clearly
Example
He will **lay out** the budget during the meeting.
他会在会议上详细说明预算。
idiom

make a name for oneself

因某事而出名；成名
Meaning
to become well-known or famous for something
Example
He **made a name for himself** as a creative designer.
他作为一名有创意的设计师而出名。
idiom

bright future ahead

拥有积极的前景或可能性
Meaning
having positive prospects or possibilities
Example
With your hard work, you have a **bright future ahead**.
通过你的努力工作，你拥有一个 **光明的未来**。
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

Sail close to the wind

冒险或危险行事。
Meaning
To take risks or act dangerously.
Example
He’s **sailing close to the wind** by lying to his boss.
他通过对老板撒谎，**在风中航行得很近**。
idiom

lay it on thick

夸大称赞或奉承
Meaning
to exaggerate praise or flattery
Example
She really **laid it on thick** when complimenting her boss.
她在夸奖老板时真的**过分夸奖**。
idiom

take the time to listen

努力去理解或关心他人的感受
Meaning
to make an effort to understand or care about someone else's feelings
Example
Sometimes, all we need is to **take the time to listen** to others' problems.
有时候，我们只需要**花时间听听**他人的问题。
idiom

blow your mind

极大地打动或震撼某人
Meaning
to impress or amaze someone greatly
Example
The new AI technology will **blow your mind**.
新的人工智能技术将让你震惊。
idiom

have a sense of self-worth

相信你有价值并值得尊重
Meaning
to believe that you are valuable and deserve respect
Example
It's important to **have a sense of self-worth** to succeed in life.
在生活中取得成功，拥有自我价值感很重要。
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

Breaking news

新鲜且重要的信息正在立即报道
Meaning
New and important information being reported immediately
Example
We have **breaking news** about the election results.
我们有关于选举结果的**突发新闻**。
idiom

to play fair

诚实行事并遵循规则。
Meaning
To act honestly and follow the rules.
Example
In every competition, we must **play fair**.
在每场比赛中，我们必须**公平竞赛**。
idiom

Never say die

始终保持乐观和坚定的态度。
Meaning
Always remain optimistic and determined.
Example
He faced many challenges but had a **never say die** attitude.
他面临了许多挑战，但保持着**永不言弃**的态度。
idiom

count to ten

在生气之前暂停并冷静下来
Meaning
to pause and calm down before reacting in anger
Example
When you’re upset, just **count to ten** before speaking.
当你生气时，在说话之前先**数到十**。
idiom

run the show

负责某项活动或组织
Meaning
to be in charge of an activity or organization
Example
Ever since the director left, Emma has been **running the show**.
自从导演离开后，艾玛一直在**掌控大局**。
idiom

play fair

诚实行事并平等对待他人
Meaning
to act honestly and treat others equally
Example
We expect everyone to **play fair** during the competition.
我们希望每个人在比赛期间都能**公平竞争**。
idiom

predictive modeling

一种用于人工智能的技术，用于根据历史数据预测未来趋势
Meaning
a technique used in AI to predict future trends based on historical data
Example
The use of **predictive modeling** helps companies plan better for the future.
使用**预测建模**可以帮助公司更好地规划未来。
idiom

make someone's day

让某人非常高兴
Meaning
to make someone very happy
Example
Your message really **made my day**!
你的消息真的让我非常高兴！
idiom

play devil's advocate

为了测试一个想法的强度而反对它
Meaning
to argue against an idea to test how strong it is
Example
I don't necessarily disagree, but let me **play devil's advocate** for a moment.
我不一定不同意，但让我暂时扮演一下反对者。
idiom

bend someone’s ear

与某人长时间交谈，通常是为了抱怨
Meaning
to talk to someone for a long time, usually to complain
Example
He **bent my ear** about his terrible day at work.
他**在我耳边抱怨**他工作中的糟糕一天。
idiom

to be on cloud nine

极度高兴
Meaning
to be extremely happy
Example
She was **on cloud nine** after hearing the good news about her promotion.
她在听到关于晋升的好消息后，**云端九**了。
idiom

take your life in your hands

做一些非常冒险或危险的事。
Meaning
To do something very risky or dangerous.
Example
You’re **taking your life in your hands** by driving in that storm.
你在那场暴风雨中开车就是在拿自己的生命冒险。
idiom

to clean one's hands

摆脱某事的责任，尤其是错误行为的责任
Meaning
to rid oneself of responsibility for something, especially wrongdoing
Example
He tried to **clean his hands** of the situation, but we all knew he was involved.
他试图**洗手不干**，但我们都知道他参与了。
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

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

hold oneself accountable

为自己的行为或决定承担责任
Meaning
to take responsibility for one's actions or decisions
Example
A true leader **holds himself accountable** for the team’s failures.
真正的领导者会为团队的失败承担责任。
idiom

close the deal

成功地达成协议
Meaning
to successfully finalize an agreement
Example
After weeks of negotiation, they finally **closed the deal**.
经过数周的谈判，他们终于达成了协议。
idiom

can’t wait

急切地或迫不及待地等待某事发生
Meaning
to be very eager or impatient for something to happen
Example
I **can’t wait** to see the new movie!
我迫不及待想要看新电影！
idiom

gray matter

智慧或大脑能力
Meaning
intelligence or brainpower
Example
It takes a lot of **gray matter** to solve such a complex problem.
解决这样复杂的问题需要很多智慧。
idiom

get acquainted

与某人变得熟悉或友好
Meaning
to become familiar or friendly with someone
Example
We had a short chat to **get acquainted**.
我们短暂交谈以便相互了解。
idiom

Pass down from generation to generation

将知识、习俗或传统从一代传给下一代
Meaning
To transfer knowledge, customs, or traditions from one generation to the next
Example
These folk songs have been **passed down from generation to generation**.
这些民歌已经**一代代传承**下来。
idiom

A friend to all is a friend to none

那些试图取悦每个人的人最终可能没有取悦任何人
Meaning
Someone who tries to please everyone may end up pleasing no one
Example
He is friendly to everyone, but he has no real close friends because **a friend to all is a friend to none**.
他对每个人都很友好，但他没有真正亲近的朋友，因为**每个人的朋友是没有朋友的**。
idiom

smile from ear to ear

露出大大的微笑，表现出幸福感
Meaning
to have a big, broad smile showing happiness
Example
He was **smiling from ear to ear** after the interview.
他在面试后笑得合不拢嘴。
idiom

fall on one's shoulders

对困难或不愉快的事情负责
Meaning
to be responsible for something difficult or unpleasant
Example
The task of organizing the event **fell on her shoulders**.
组织活动的任务落在了她的肩膀上。
idiom

family comes first

家庭是生活中最重要的优先事项
Meaning
family is the most important priority in life
Example
No matter how busy I get, **family comes first** for me.
无论我多么忙碌，**家庭第一**对我来说是最重要的。
idiom

let your imagination run wild

允许自己自由地和富有创意地思考
Meaning
to allow yourself to think freely and creatively
Example
When writing stories, I always **let my imagination run wild**.
当我写故事时，我总是让我的想象力自由驰骋。
idiom

music to one’s ears

让某人感到非常高兴或满意的事情
Meaning
something that makes someone feel very happy or pleased
Example
The news of his promotion was **music to his ears**.
他升职的消息对他来说如音乐入耳。
idiom

android-like

像机器人一样没有情感或机械地行动
Meaning
acting emotionless or mechanical like a robot
Example
He works in an **android-like** manner, without any emotion.
他以**android-like**的方式工作，没有任何情感。
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

lean into

拥抱并积极参与某事
Meaning
to embrace and actively engage with something
Example
She decided to **lean into** the new role and learn quickly.
她决定拥抱这个新角色并迅速学习。
idiom

top dog

最重要或最有权力的人
Meaning
the most important or powerful person
Example
He’s the **top dog** in the company.
他是公司里最重要的人。
idiom

teach someone a lesson

让某人从他们的错误中学习
Meaning
to make someone learn from their mistake
Example
The teacher’s punishment really **taught him a lesson**.
老师的惩罚真的**给了他一个教训**。
idiom

leave a mark

产生持久的影响或作用
Meaning
to have a lasting effect or influence
Example
Her leadership skills will surely **leave a mark** on the company.
她的领导能力将毫无疑问地**留下印记**在公司。
idiom

to debug a program

识别并修复计算机程序中的错误或问题
Meaning
to identify and fix errors or problems in a computer program
Example
I spent all day **to debug a program** that was causing crashes.
我花了一整天时间**调试程序**，解决了导致崩溃的问题。
idiom

to have a clean bill of health

被医生宣布身体健康
Meaning
to be declared healthy by a doctor
Example
After the checkup, she got **a clean bill of health**.
体检后，她被医生宣布身体健康。
idiom

lightbulb moment

一个突如其来的顿悟或灵感时刻
Meaning
a sudden moment of realization or inspiration
Example
He had a **lightbulb moment** when he figured out how to fix the code.
他在弄明白如何修复代码时，发生了一个**灯泡时刻**。
idiom

zero-day exploit

在漏洞被修补之前发生的网络攻击
Meaning
a cyberattack that occurs before a vulnerability is patched
Example
Hackers launched a **zero-day exploit** targeting the system’s core files.
黑客发起了一个**零日漏洞利用**， targeting系统核心文件。
idiom

tough luck

对某人不幸的同情表达
Meaning
expression of sympathy for someone’s misfortune
Example
Didn’t get the job? **Tough luck**!
没得到工作？真倒霉！
idiom

Speak the truth

讲真话，不说谎。
Meaning
To tell the truth without lying.
Example
She decided to **speak the truth** no matter what the consequences were.
她决定了无论结果如何都要**讲真话**。
idiom

get in touch

取得联系
Meaning
to contact or communicate with someone
Example
I’ll **get in touch** with you tomorrow.
我明天会联系你。
idiom

get the wrong end of the stick

完全误解某个情况或声明
Meaning
to misunderstand a situation or statement completely
Example
I think you’ve **got the wrong end of the stick**—I wasn’t blaming you.
我觉得你**理解错了**—我并没有责怪你。
idiom

the show must go on

尽管困难，仍要继续
Meaning
to continue despite difficulties
Example
Even after the power went out, the actors knew **the show must go on**.
即使停电，演员们也知道**演出必须继续**。
idiom

knock it out of the park

做某事极其出色或成功
Meaning
to do something extremely well or successfully
Example
Her presentation **knocked it out of the park**.
她的演讲 **做得非常出色**。
idiom

keep your dreams alive

即使困难，也要继续相信自己的目标
Meaning
to continue believing in your goals even when it's hard
Example
No matter how tough life gets, **keep your dreams alive**.
无论生活多么艰难，**保持你的梦想活着**。
idiom

eye on the prize

保持专注于实现你的目标
Meaning
to stay focused on achieving your goal
Example
She always keeps her **eye on the prize** no matter what.
无论发生什么，她总是**紧盯着奖品**。
idiom

the best is yet to come

更好的事情将在未来到来
Meaning
better things are coming in the future
Example
Don’t worry about the past; **the best is yet to come**.
不要担心过去; **最好的还在前面**。
idiom

stress out

因为压力而变得非常焦虑或紧张
Meaning
to become very anxious or nervous due to pressure
Example
She tends to **stress out** before exams.
她在考试前往往会非常紧张。
idiom

have a vision

对未来有一个清晰的想法或梦想
Meaning
to have a clear idea or dream for the future
Example
A good leader must **have a vision** for their team.
一个好领导必须为他们的团队有一个愿景。
idiom

keep someone at arm’s length

与某人保持距离
Meaning
to avoid getting too close to someone
Example
After the argument, I **kept him at arm’s length**.
争吵之后，我与他保持距离。
idiom

live from hand to mouth

勉强维持生计
Meaning
to barely have enough money to survive
Example
Many laborers **live from hand to mouth** every day.
许多工人每天勉强维持生计。