battle-tested
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idiom

battle-tested

通过经验或困难证明有效
Meaning
proven effective through experience or hardship
Example
She’s a **battle-tested** leader who knows how to stay calm under pressure.
她是一位有经验的领导者，知道如何在压力下保持冷静。
idiom

be accountable for

对某事负责并能够解释它
Meaning
to be responsible for something and able to explain it
Example
As the team leader, he is **accountable for the project's outcome**.
作为团队领导，他对**项目的结果负责**。
idiom

bounce around

随意讨论或在想法之间游走
Meaning
to discuss or move between ideas casually
Example
Let’s **bounce around** concepts before we pick one.
让我们在挑选之前讨论概念。
idiom

blow someone's cover

揭露某人的秘密身份或隐藏目的
Meaning
to reveal someone's secret identity or hidden purpose
Example
The journalist accidentally **blew the cover** of the undercover agent.
记者不小心揭露了卧底特工的身份。
idiom

back on your feet

恢复健康了
Meaning
recovered and healthy again
Example
It’s good to see you **back on your feet** after the flu.
很高兴看到你在得流感后恢复健康。
idiom

blast off

以极大的能量或热情开始
Meaning
to take off or start with great energy or enthusiasm
Example
The project is ready to **blast off** next week.
该项目准备在下周启动。
idiom

blow up in your face

一个计划或情况突然出错并造成麻烦
Meaning
a plan or situation that suddenly goes wrong and causes trouble
Example
His plan to impress the boss **blew up in his face**.
他打算给老板留下深刻印象的计划**在他面前爆炸**。
idiom

bring forward

将某物移至较早的时间
Meaning
to move something to an earlier time
Example
We had to **bring forward** the meeting due to travel.
由于旅行，我们不得不提前会议。
idiom

blue chip company

一家大型、可靠且财务稳定的公司
Meaning
a large, reliable, and financially stable company
Example
Investors prefer to put their money into **blue chip companies**.
投资者更愿意将资金投入到**蓝筹公司**。
idiom

black box thinking

黑箱思维：通过研究输入和输出分析未知的过程
Meaning
analyzing unknown processes by studying their inputs and outputs
Example
In AI research, **black box thinking** helps improve transparency.
在AI研究中，**黑箱思维**有助于提高透明度。
idiom

black box

一个工作原理不被理解或不透明的系统或过程
Meaning
a system or process whose workings are not understood or transparent
Example
The neural network is often described as a **black box** because its decision-making process is not fully transparent.
神经网络通常被描述为一个**黑盒**，因为其决策过程并不完全透明。
idiom

busy bee

一个总是忙碌且活跃的人
Meaning
a person who is always busy and active
Example
She’s a **busy bee**, always working on something.
她是一个**忙碌的蜜蜂**，总是在忙碌着做事。
idiom

back and forth

反复改变意见或决策
Meaning
to change opinions or decisions repeatedly
Example
We’ve been going **back and forth** about this issue for weeks.
我们已经就这个问题讨论了几个星期。
idiom

break the problem down

将复杂的问题分解成较小、更易管理的部分
Meaning
to divide a complex problem into smaller, more manageable parts
Example
Let's **break the problem down** into smaller steps.
让我们把问题分解成较小的步骤
idiom

birds of a feather flock together

有相似兴趣或性格的人往往会成为朋友。
Meaning
People who have similar interests or personalities tend to be friends.
Example
John and Mike are always together; well, **birds of a feather flock together**.
约翰和迈克总是在一起；俗话说，物以类聚，人以群分。
idiom

blood, sweat, and tears

巨大的努力和辛勤的工作
Meaning
great effort and hard work
Example
Building this company took a lot of **blood, sweat, and tears**.
建立这家公司花费了很多努力和辛勤的工作。
idiom

black and blue

淤伤; 有伤口的痕迹
Meaning
bruised; having marks from injury
Example
He was **black and blue** after falling off his bike.
他摔下自行车后淤伤了。
idiom

back each other up

互相支持与帮助
Meaning
to support and help one another
Example
In a good team, members always **back each other up**.
在一个好的团队中，成员们总是互相支持。
idiom

behind schedule

比计划或预期的时间晚
Meaning
later than planned or expected
Example
The flight is **behind schedule** because of the storm.
航班因暴风雨而**延误**。
idiom

better late than never

做某事迟做总比根本不做要好
Meaning
it’s better to do something late than not do it at all
Example
**Better late than never** – he finally apologized.
**迟做总比不做强** – 他终于道歉了。
idiom

buckle down

开始认真工作
Meaning
to start working seriously
Example
If you want to pass the exam, you’d better **buckle down** and study.
如果你想通过考试，你最好**buckle down**并开始学习。
idiom

bail someone out

帮助某人摆脱困境
Meaning
to help someone out of a difficult situation
Example
His friend **bailed him out** when he ran out of money.
他的朋友在他没钱时**救了他**。
idiom

burst with energy

充满活力和热情
Meaning
to have a lot of energy and enthusiasm
Example
The children were **bursting with energy** during the game.
孩子们在游戏中充满活力。
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

Born with a silver spoon in one's mouth

出生在富裕家庭。
Meaning
To be born into a wealthy family.
Example
He never had to struggle; he was **born with a silver spoon in his mouth**.
他从未需要奋斗；他出生在富裕家庭。
idiom

break the deadlock

打破僵局或脱离无法进展的局面
Meaning
to end a situation in which progress is not possible
Example
They finally managed to **break the deadlock** through discussion.
他们最终通过讨论打破了僵局。
idiom

big thanks

一种非正式的说谢谢的方式
Meaning
an informal way to say thank you very much
Example
**Big thanks** to everyone who supported the project.
非常感谢所有支持该项目的人。
idiom

break the silence

在一段沉默之后开始说话
Meaning
to start talking after a period of silence
Example
He was the one to **break the silence** after the awkward pause.
尴尬的沉默之后，他是那个**打破沉默**的人。
idiom

brain like a sieve

记忆力非常差
Meaning
having a very bad memory
Example
I keep forgetting things—I’ve got a **brain like a sieve**!
我总是忘记事情——我有一个**像筛子一样的大脑**！
idiom

bring up

抚养或照顾一个孩子直到成年
Meaning
to raise or care for a child until adulthood
Example
She was **brought up** by her grandparents.
她是由她的祖父母抚养长大的。
idiom

bail on

突然抛弃某人或某事
Meaning
to abandon someone or something suddenly
Example
He wouldn’t **bail on** his friends at the last minute.
他不会在最后一刻抛弃他的朋友。
idiom

break down the problem

逐步分析一个问题
Meaning
to analyze a problem step by step
Example
Let’s **break down the problem** to understand it better.
让我们逐步分析这个问题，以便更好地理解它。
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

build up your confidence

逐渐变得更加自信
Meaning
to gradually become more confident
Example
Public speaking can help you **build up your confidence**.
公众演讲可以帮助你增强信心。
idiom

beyond one’s grasp

太难理解或实现
Meaning
too difficult to understand or achieve
Example
Quantum physics is **beyond my grasp** right now.
量子物理学现在对我来说**难以理解**。
idiom

be a role model

成为别人应该模仿的榜样
Meaning
to be an example that others should imitate
Example
She is always a **role model** for younger employees in the company.
她总是公司里年轻员工的**榜样**。
idiom

Burn rate

创业公司花费资本的速度。
Meaning
The rate at which a startup spends its capital.
Example
Our **burn rate** is too high; we need to cut costs.
我们的**烧钱率**太高；我们需要削减成本。
idiom

bright spark

一个非常聪明或有才华的人
Meaning
a very clever or talented person
Example
The new intern is a real **bright spark** with great ideas.
新的实习生是一个真正的**bright spark**，拥有很棒的想法。
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

by trial and error

通过实验和纠正错误来学习
Meaning
learning by experimenting and correcting mistakes
Example
We developed the best method **by trial and error**.
我们通过 **试验和错误** 开发了最好的方法。
idiom

bookworm

一个喜欢阅读的人
Meaning
a person who loves reading
Example
He’s such a **bookworm**; he spends all his free time in the library.
他真是一个书虫；他把所有的空闲时间都花在图书馆里。
idiom

bend the truth

稍微改变事实，使某事听起来更好
Meaning
to slightly change the truth to make something sound better
Example
He tends to **bend the truth** when telling stories.
他在讲故事时常常**bend the truth**。
idiom

blow your own trumpet

吹嘘或炫耀自己的成就
Meaning
to boast or brag about your achievements
Example
He never stops **blowing his own trumpet** about his success.
他从不停止**吹嘘自己的成功**。
idiom

brush aside

把某事视为不重要并置之不理
Meaning
to dismiss something as unimportant
Example
Management **brushed aside** the rumors during the briefing.
管理层在简报中**无视**了这些谣言。
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

bookend something

标志某事的开始和结束
Meaning
to mark the beginning and end of something
Example
Her career was **bookended** by two great performances.
她的职业生涯以两场精彩的表演为开端和结束。
idiom

believe you can

相信自己能做到的心态
Meaning
to have the mindset that you are capable of doing something
Example
If you **believe you can**, you’re halfway there.
如果你相信自己能做到，你就已经成功一半了。
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

Burst with gratitude

感到极其感激。
Meaning
To feel extremely thankful.
Example
She was **bursting with gratitude** after receiving help.
她在收到帮助后，**充满了感激之情**。
idiom

bear with

对某人或某事保持耐心
Meaning
to be patient with someone or something
Example
Please **bear with** us while we resolve the issue.
请在我们解决问题时耐心等待。
idiom

burning the midnight oil

熬夜工作
Meaning
working late into the night
Example
She’s been **burning the midnight oil** to finish the report.
她为了完成报告，一直在熬夜工作。
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

black hole

一种事物消失或丧失而没有解释的情况
Meaning
a situation where things disappear or are lost without explanation
Example
All the research data went into a **black hole** after the server crash.
所有研究数据在服务器崩溃后进入了一个**黑洞**。
idiom

blaze a trail

成为第一个做创新的事情的人
Meaning
to be the first to do something innovative
Example
She **blazed a trail** in renewable energy research.
她在可再生能源研究中开辟了道路。
idiom

burst with pride

对某人或某事感到非常骄傲
Meaning
to be very proud of someone or something
Example
His parents **burst with pride** when he won the award.
他父母因为他获得奖项而感到无比骄傲。
idiom

block off

封锁一个区域，使人们无法进入
Meaning
to close an area so people cannot enter
Example
Police **blocked off** the street after the accident.
警方在事故后封锁了街道。
idiom

Bursting at the seams

非常满或拥挤。
Meaning
To be very full or crowded.
Example
The store was **bursting at the seams** during the sale.
商店在促销时非常拥挤。
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

build trust

在关系中建立或发展信任
Meaning
to create or develop trust in a relationship
Example
It takes time to **build trust** with new people.
与新的人建立信任需要时间。
idiom

burn your bridges

做出无法撤销的决定
Meaning
to make a decision that cannot be reversed
Example
Be careful not to **burn your bridges** with your old employer.
小心不要和你的旧雇主**烧掉你的桥梁**。
idiom

big picture

整体观点或情况
Meaning
the overall perspective or situation
Example
Producers always try to see the **big picture** before making changes.
制片人总是在做出改变之前试图看到整体情况。
idiom

blind justice

不受外部因素影响的公正正义
Meaning
justice that is impartial and not influenced by external factors
Example
**Blind justice** treats everyone the same, regardless of wealth or status.
**盲目的正义** 对每个人一视同仁，不论财富或地位。
idiom

backroom deal

由有权势的人达成的秘密协议
Meaning
a secret agreement made by powerful people
Example
The media exposed the **backroom deal** between the two parties.
媒体揭露了两方之间的**秘密协议**。
idiom

blow the whistle

揭露不正当行为或揭示机密信息
Meaning
to expose wrongdoing or reveal secret information
Example
He **blew the whistle** on the company’s illegal activities.
他揭露了公司非法活动。
idiom

breeze through

轻松地做某事，几乎不费力气
Meaning
to do something easily and with little effort
Example
She managed to **breeze through** the exam without any problems.
她轻松地通过了考试，没有遇到任何问题。
idiom

brute force attack

一种通过尝试所有可能的密码组合直到找到正确密码的黑客方法
Meaning
a method of hacking that tries all possible combinations of passwords until the correct one is found
Example
The attacker launched a **brute force attack** on the system’s login page.
攻击者对系统的登录页面发起了**暴力破解攻击**。
idiom

back on one’s feet

恢复并再次变得健康
Meaning
to recover and be healthy again
Example
After a few days of rest, he’s finally **back on his feet**.
休息几天后，他终于**恢复过来**。
idiom

bored to death

极度无聊
Meaning
extremely bored
Example
I was **bored to death** during the long lecture.
我在长时间的讲座中感到极度无聊。
idiom

Boom and bust

一段大繁荣之后紧跟着急剧下降的时期。
Meaning
A period of great prosperity followed by a sharp decline.
Example
The real estate market often experiences **boom and bust** cycles.
房地产市场经常经历**繁荣与萧条**的周期。
idiom

breathe in

深呼吸
Meaning
to inhale air deeply
Example
Take a moment to **breathe in** before you speak.
在说话之前，花一刻钟深呼吸。
idiom

balance the books

确保收入和支出相等
Meaning
to make sure income and expenses are equal
Example
The accountant worked late to **balance the books**.
会计加班工作，直到**平衡账本**。
idiom

break new ground

做一些创新或开创性的事情
Meaning
to do something innovative or pioneering
Example
Their research **broke new ground** in medical science.
他们的研究在医学科学上开辟了新天地。
idiom

Behind the curve

相比竞争对手，处于落后或发展较慢的状态。
Meaning
To be less advanced or slow compared to competitors.
Example
Our company is **behind the curve** in adopting AI technologies.
我们的公司在采用人工智能技术方面落后于竞争对手。
idiom

bounce rate

在只查看一个页面后离开网站的访客百分比
Meaning
the percentage of visitors who leave a website after viewing only one page
Example
We need to lower our **bounce rate** to keep visitors engaged.
我们需要降低我们的 **跳出率** 以保持访客的参与。
idiom

burn your fingers

因不好的决定或错误而遭受痛苦
Meaning
to suffer because of a bad decision or mistake
Example
He **burned his fingers** by trusting the wrong person.
他因为信错了人，**烧了自己的手指**。
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

burst with joy

高兴得难以抑制情感
Meaning
to be so happy that it’s hard to contain emotions
Example
The parents **burst with joy** when their child won the prize.
当孩子赢得奖项时，父母**高兴得合不拢嘴**。
idiom

blackout

暂时失去意识
Meaning
to lose consciousness temporarily
Example
He suddenly **blacked out** during the match.
他在比赛中突然**晕倒**。
idiom

burn your boats

承诺采取行动而没有退路
Meaning
to commit yourself to a course of action without a way back
Example
He **burned his boats** when he quit his job to start a business.
当他辞去工作并开始创业时，他**烧掉了自己的船**。
idiom

bite the byte

应对困难的技术挑战
Meaning
to deal with a difficult technological challenge
Example
Developers had to **bite the byte** to fix the software issue.
开发人员必须 **bite the byte** 来修复软件问题。
idiom

be at your wits' end

担心或烦恼到不知道该怎么办
Meaning
to be so worried or upset that you don't know what to do
Example
I'm **at my wits' end** trying to calm the kids down.
我在尽力平静孩子们时已经精疲力尽。
idiom

be in high spirits

感到非常开心和积极
Meaning
to feel very happy and positive
Example
Everyone was **in high spirits** after the successful event.
每个人在成功的活动后都非常开心。
idiom

black sheep of the family

一个被认为是家庭耻辱的家庭成员
Meaning
a family member who is considered a disgrace
Example
He became the **black sheep of the family** after his bad decisions.
他在做出错误决策后，成了家族中的**black sheep of the family**。
idiom

blind faith

不加质疑地信任
Meaning
trusting without questioning
Example
Having **blind faith** can sometimes lead to disappointment.
拥有**盲目信任**有时会导致失望。
idiom

betray someone's trust

背叛某人的信任
Meaning
to break someone's confidence in you
Example
She would never **betray your trust**.
她永远不会背叛你的信任。
idiom

Balance the scales

确保一切公平或相等
Meaning
to make sure everything is fair or equal
Example
We need to **balance the scales** before making a final decision.
我们需要在做出最终决定之前**平衡天平**。
idiom

build one's confidence

增加自信或相信自己的能力
Meaning
to increase one's self-assurance or belief in one's abilities
Example
Public speaking classes helped him **build his confidence**.
公共演讲课程帮助他**建立了自信**。
idiom

blow away the cobwebs

在不活跃后让身心焕然一新
Meaning
to refresh one’s mind or body after inactivity
Example
A short walk helped me **blow away the cobwebs**.
一次短暂的散步帮助我**焕然一新**。
idiom

Best foot forward

努力给人留下最好的印象
Meaning
To try to make the best possible impression
Example
She always puts her **best foot forward** on important occasions.
她总是在重要场合尽力表现自己最好的一面。
idiom

bold as brass

非常自信，完全不害羞
Meaning
to be very confident and not shy at all
Example
She walked into the meeting **bold as brass**.
她毫不羞怯地走进了会议。
idiom

blow one’s top

突然变得非常生气
Meaning
to suddenly become very angry
Example
He **blew his top** when he saw the mistake.
当他看到错误时，他非常生气。
idiom

big mouth

一个说太多话或泄露秘密的人
Meaning
someone who talks too much or reveals secrets
Example
Don’t tell him anything — he’s got a **big mouth**.
别告诉他任何事情 — 他有一个**大嘴巴**。
idiom

Born and bred

在特定地方度过一生并受其文化影响
Meaning
Having lived all one’s life in a particular place and influenced by its culture
Example
She’s a Dhaka **born and bred** woman.
她是一个在达卡出生并长大的女人。
idiom

beat a dead horse

在已经解决的问题上浪费时间
Meaning
to waste time on a topic that has already been resolved
Example
Stop **beating a dead horse**; the decision is final.
别再纠结这个问题了，决定已经定了。
idiom

breaking the deadlock

结束没有进展的情况
Meaning
to end a situation where no progress is being made
Example
The negotiation team succeeded in **breaking the deadlock**.
谈判团队成功地**打破僵局**。
idiom

breathe easy

在压力大或危险的情况下放松
Meaning
to relax after a stressful or dangerous situation
Example
After the pollution control laws were enforced, people could finally **breathe easy**.
在污染控制法案实施后，人们终于能够**松口气**。
idiom

Burning question

一个重要或紧急的问题，人们急于知道。
Meaning
An important or urgent question that people are eager to know.
Example
The **burning question** is whether the plan will actually work.
最关键的问题是这个计划是否真的有效。
idiom

bright-eyed and bushy-tailed

精神饱满、充满活力，尤其是在早晨
Meaning
alert and full of energy, especially in the morning
Example
He came to work **bright-eyed and bushy-tailed** after the weekend.
他在周末后精神饱满地来上班。
idiom

block out

忽略干扰或不愉快的想法
Meaning
to ignore distractions or unpleasant thoughts
Example
She tried to **block out** the noise and continue working.
她试图**阻挡**噪音并继续工作。
idiom

bond of friendship

朋友之间信任和感情的强大联系。
Meaning
A strong connection of trust and affection between friends.
Example
Their **bond of friendship** grew stronger over the years.
他们的友谊之纽随着岁月变得更加牢固。
idiom

bring the curtain down

结束某事；完成一场表演或活动
Meaning
to end something; to finish a performance or event
Example
The concert **brought the curtain down** on the music festival.
音乐会**为音乐节画上了句号**。
idiom

barefaced lie

大胆而无耻的谎言
Meaning
a bold and shameless lie
Example
His excuse was a **barefaced lie**.
他的借口是一个无耻的谎言。
idiom

blow someone's mind

让某人感到震惊或惊讶
Meaning
to amaze or astonish someone
Example
The magic show really **blew my mind**.
魔术表演真的让我大吃一惊。
idiom

black hat

一个具有恶意意图的黑客
Meaning
a hacker with malicious intent
Example
**Black hats** often exploit vulnerabilities for personal gain.
**Black hats** 常常利用漏洞来谋取个人利益。
idiom

byte the bullet

勇敢地面对困难的情况
Meaning
to face a difficult situation bravely
Example
We have to **byte the bullet** and fix the system bugs now.
我们必须勇敢地面对并修复系统的漏洞。
idiom

brick by brick

逐步而稳定地实现某事
Meaning
to achieve something gradually and steadily
Example
He built his business **brick by brick**.
他一点一点地建立了自己的事业。
idiom

behind the eight ball

处于困难的位置或处于不利地位
Meaning
to be in a difficult position or disadvantage
Example
Without proper funding, the project is **behind the eight ball**.
没有适当的资金，项目处于**困难的境地**。
idiom

break someone’s heart

让某人非常伤心
Meaning
to make someone very sad
Example
It really **broke his heart** when she left him.
当她离开他时，真的让他心碎了。
idiom

bury your head in the sand

忽略问题，指望它自己解决
Meaning
to ignore a problem hoping it will go away
Example
We can’t **bury our heads in the sand** about climate change any longer.
我们不能再对气候变化**把头埋在沙里**了
idiom

bad luck

不幸或运气差的情况
Meaning
unfortunate or unlucky situation
Example
It’s just **bad luck** that it rained on our picnic day.
只是**运气不好**，在我们的野餐日下雨了。
idiom

bursting with joy

充满幸福和兴奋
Meaning
full of happiness and excitement
Example
The children were **bursting with joy** on Christmas morning.
孩子们在圣诞早晨充满了喜悦。
idiom

born in the purple

出生于富裕或皇室家庭
Meaning
born into a wealthy or royal family
Example
He was **born in the purple**, so wealth was never an issue.
他出生于皇室家庭，因此财富从未是问题。
idiom

be lost for words

惊讶到无法言语
Meaning
to be so surprised that you cannot speak
Example
I was **lost for words** when I won the prize.
当我赢得奖品时，我 **无言以对**。
idiom

break up

结束一段浪漫关系
Meaning
to end a romantic relationship
Example
They decided to **break up** after five years together.
他们决定在一起五年后分手。
idiom

burst into tears

突然开始哭泣
Meaning
to suddenly start crying
Example
She **burst into tears** after hearing the bad news.
她听到坏消息后**突然哭了起来**。
idiom

break the bank

花费太多钱；把所有的钱都用光
Meaning
to cost too much; to use up all your money
Example
Buying that car will **break the bank**.
买那辆车会让你**倾家荡产**。
idiom

beat the clock

在截止日期前完成某事
Meaning
to finish something before the deadline
Example
We managed to **beat the clock** and submit the report early.
我们成功地**赶在最后期限前**提交了报告。
idiom

big brother

一个哥哥或一个表现得具有保护性的人
Meaning
an older brother or someone who behaves protectively
Example
Mark acts like a **big brother** to everyone in the neighborhood.
马克对邻里里的每个人都像**大哥哥**一样。
idiom

back to square one

重新开始
Meaning
to start over again
Example
After the computer crashed, I had to go **back to square one** with my report.
电脑崩溃后，我不得不重新开始我的报告。
idiom

build from the ground up

从头开始做某事
Meaning
to start something from the very beginning
Example
They **built their business from the ground up** with no investors.
他们**从头开始建立了他们的生意**，没有投资者。
idiom

bargain chip

在谈判中用于获得更好交易的有价值的东西
Meaning
something of value used in negotiations to get a better deal
Example
His offer of a longer contract was a strong **bargain chip**.
他提出的更长期合同是一个强有力的 **bargain chip**。