go behind someone’s back
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idiom

go behind someone’s back

偷偷或欺骗性地做某事，反对某人
Meaning
to do something secretly or deceitfully against someone
Example
She **went behind my back** and told the manager everything.
她**在我背后**告诉经理一切。
idiom

Cheer up

变得更开心; 不要伤心。
Meaning
Become happier; don’t be sad.
Example
It’s not the end of the world—**cheer up**!
这不是世界的末日——振作起来！
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

make up for

弥补某事
Meaning
to compensate for something
Example
We’ll **make up for** the delay with extra support.
我们会用额外的支持来弥补延迟。
idiom

pay it forward

在接受了别人的善意之后，为他人做一些善事
Meaning
to do something kind for someone else after receiving kindness
Example
After receiving help from a stranger, he decided to **pay it forward** by helping someone in need.
在从一个陌生人那里得到帮助后，他决定通过帮助有需要的人来回馈这份善意。
idiom

close ranks

在面对反对时团结并相互支持
Meaning
to unite and support each other when facing opposition
Example
The employees **closed ranks** after the company came under criticism.
员工们在公司受到批评后**团结一致**。
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

get wired

连接到互联网
Meaning
to get connected to the internet
Example
Everyone in the office is **getting wired** to the new network.
办公室里每个人都在**连接**到新网络。
idiom

old flame

曾经有过浪漫关系的人
Meaning
a person one had a romantic relationship with in the past
Example
He met his **old flame** at the reunion.
他在聚会上遇见了他的**老情人**。
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

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

throw in the towel

放弃或退出
Meaning
to give up or quit
Example
After many failures, he **threw in the towel**.
经历多次失败后，他放弃了。
idiom

get a degree

完成一个正式的教育课程
Meaning
to complete a formal education program
Example
She worked hard to **get a degree** in engineering.
她努力学习以获得工程学位。
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

bring to life

使某事物更有趣或更逼真
Meaning
to make something more interesting or realistic
Example
The artist’s use of color really **brought the painting to life**.
艺术家使用的颜色真的 **使画作栩栩如生**。
idiom

a blank page

一个新的开始; 一个重新开始的机会
Meaning
a new beginning; an opportunity to start fresh
Example
After graduation, she saw her life as **a blank page** waiting to be written.
毕业后，她把自己的生活看作**空白页面**，等待着被书写。
idiom

keep your head up

在困境中保持自信和坚强
Meaning
to remain confident and strong during hardships
Example
**Keep your head up**, better days are coming.
**抬起头来**, 更好的日子即将到来。
idiom

take the blame

对某事错误承担责任
Meaning
to accept responsibility for something wrong
Example
He decided to **take the blame** for the team's failure.
他决定为团队的失败**承担责任**。
idiom

Keep it under your hat

保持某事秘密。
Meaning
To keep something secret.
Example
I’ll tell you a secret, but **keep it under your hat**.
我会告诉你一个秘密，但**保密**。
idiom

Look on the bright side

专注于情况的积极方面。
Meaning
To focus on the positive aspects of a situation.
Example
**Look on the bright side**, at least you learned something.
看看积极的一面，至少你学到了东西。
idiom

a bone of contention

一个分歧或争议的主题
Meaning
a subject of disagreement or dispute
Example
Money has always been **a bone of contention** between them.
钱一直是他们之间的**争议点**。
idiom

cloud computing

使用远程服务器通过互联网存储、管理和处理数据的做法
Meaning
the practice of using remote servers to store, manage, and process data over the internet
Example
Many businesses rely on **cloud computing** for data storage and security.
许多企业依赖于**云计算**来进行数据存储和安全。
idiom

down and out

感到绝望和失败
Meaning
feeling hopeless and defeated
Example
After losing everything, he was completely **down and out**.
失去一切后，他完全崩溃了。
idiom

on the fence

对某事感到不确定或犹豫不决
Meaning
undecided or unsure about something
Example
She’s still **on the fence** about moving abroad.
她仍然对是否搬到国外**在围栏上**。
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

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

to make the grade

达到所需标准
Meaning
to meet the required standard
Example
He didn’t **make the grade** in the final exam.
他在期末考试中没有**通过**。
idiom

Band together

为了共同的目标而团结起来。
Meaning
To unite for a common purpose.
Example
The workers **banded together** to demand better wages.
工人们团结起来要求更高的工资。
idiom

spend money like water

自由或浪费地花钱
Meaning
to spend money freely or wastefully
Example
She **spends money like water** on clothes.
她在衣服上像水一样花钱。
idiom

bosom friends

非常亲密和亲切的朋友
Meaning
very close and intimate friends
Example
They have been **bosom friends** since childhood.
他们从小就是非常亲密的朋友。
idiom

be in the driver’s seat

控制局势
Meaning
to be in control of a situation
Example
After the merger, our company is **in the driver’s seat**.
合并后，我们公司处于**驾驶员座位**。
idiom

behind someone’s back

在他们不知道的情况下做某事
Meaning
to do something secretly without their knowledge
Example
She was talking about me **behind my back**.
她在**我背后**说我的坏话。
idiom

a splash of color

为了效果而添加的小量明亮颜色
Meaning
a small amount of bright color added for effect
Example
Add **a splash of color** to make the room lively.
添加**一抹色彩**让房间更有生气。
idiom

at the end of the day

当一切都考虑到时；最终
Meaning
when everything is considered; ultimately
Example
**At the end of the day**, teamwork solved the problem.
最终，团队合作解决了问题。
idiom

user journey

用户与品牌或产品的完整体验
Meaning
the complete experience a user has with a brand or product
Example
Mapping the **user journey** helps improve customer satisfaction.
绘制**user journey**有助于提高客户满意度。
idiom

my bad

一种随意承认小错误的方式
Meaning
a casual way to admit a small mistake
Example
Oh, I forgot to bring your book — **my bad**!
哦，我忘了带你的书 — 我的错！
idiom

play the political card

利用政治议题为自己谋取利益
Meaning
to use a political issue to one’s advantage
Example
The minister tried to **play the political card** to gain public sympathy.
部长试图**打政治牌**以获得公众的同情。
idiom

sink or swim

凭自己的努力成功或失败
Meaning
to succeed or fail by your own efforts
Example
When you start your own business, it’s **sink or swim**.
当你开始自己的生意时，要么成功要么失败。
idiom

log off

从计算机系统断开连接
Meaning
to disconnect from a computer system
Example
Don’t forget to **log off** before you leave the office.
离开办公室前，别忘了登出。
idiom

hold back on

推迟或减少做某事
Meaning
to delay or reduce doing something
Example
Let’s **hold back on** hiring until sales improve.
让我们推迟招聘，直到销售有所改善。
idiom

like father, like son

儿子像父亲一样行为
Meaning
a son behaves like his father
Example
Tom loves cars just like his dad — **like father, like son**!
汤姆像他的爸爸一样喜欢汽车 — 就像父亲一样，儿子也是！
idiom

reinforcement learning

一种机器学习方式，其中代理通过执行动作并接受反馈来学习做出决策
Meaning
a type of machine learning where an agent learns to make decisions by performing actions and receiving feedback
Example
In **reinforcement learning**, the model improves over time as it learns from trial and error.
**reinforcement learning** 中，模型随着时间的推移逐渐改进，因为它通过试验和错误进行学习。
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

to take the law into one’s own hands

亲自惩罚某人而不是让当局处理
Meaning
to punish someone personally instead of letting the authorities handle it
Example
The villagers **took the law into their own hands** when the thief escaped.
当小偷逃跑时，村民们**自行伸张正义**。
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

smoke-filled room

一个权势人物秘密做决定的地方
Meaning
a place where powerful people make decisions secretly
Example
The new policy was decided in a **smoke-filled room** by senior officials.
新政策是在**烟雾弥漫的房间**中由高级官员决定的。
idiom

color outside the lines

以创造性和不拘一格的方式思考或行动
Meaning
to think or act creatively and unconventionally
Example
Good designers always **color outside the lines**.
优秀的设计师总是**超越界限**思考。
idiom

the big bang

一个突如其来的强大开始；通常用于隐喻
Meaning
a sudden and powerful beginning; often used metaphorically
Example
The startup launched with **a big bang** in the tech world.
这家初创公司在科技界以**大爆炸**的方式推出。
idiom

carry the weight of responsibility

承担重要责任的负担
Meaning
to bear the burden of an important duty or obligation
Example
As a team leader, he has to **carry the weight of responsibility**.
作为团队领导，他必须**承担责任的重担**。
idiom

the light dawned on someone

某人突然明白了某件事
Meaning
someone suddenly understands something
Example
The **light dawned on her** that she had made a mistake.
她**突然明白了**自己犯了一个错误。
idiom

have mixed feelings

不确定或同时有积极和消极的情感
Meaning
to be uncertain or have both positive and negative emotions
Example
I **have mixed feelings** about moving to another city.
我对搬到另一个城市感到矛盾。
idiom

work around the clock

昼夜不停地工作
Meaning
to work continuously day and night
Example
They **worked around the clock** to finish the project.
他们日夜工作完成了项目。
idiom

show the ropes

教某人如何完成一项工作或任务
Meaning
to teach someone how to do a job or task
Example
It took me a while to **show the ropes** to the new employee, but now they’re doing well.
我花了一些时间向新员工**展示绳索**，但现在他们做得很好。
idiom

fish for

试图得到某些东西，比如信息或赞美
Meaning
to try to get something such as information or praise
Example
He keeps **fishing for** compliments about his report.
他总是在为自己的报告寻求称赞。
idiom

double check with

与某人确认信息
Meaning
to confirm information with someone
Example
Could you **double check with** finance about the budget?
你能和财务部门确认预算吗?
idiom

jump on the bandwagon

加入已经流行或成功的事物
Meaning
to join something that is already popular or successful
Example
Many people **jumped on the bandwagon** of budget travel.
许多人加入了廉价旅行的潮流。
idiom

play a part

在某事中发挥作用或影响
Meaning
to have a role or influence in something
Example
She **played a part** in making the project successful.
她在使项目成功方面发挥了作用。
B2 idiom

up in the air

不确定或未决定
Meaning
Uncertain or undecided
Example
The plans for the project are still up in the air.
这个项目的计划仍悬而未决。
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

shake off

摆脱不愉快的事情
Meaning
to get rid of something unpleasant
Example
She took a walk to **shake off** the stress.
她散步以**摆脱**压力。
idiom

a smooth sea never made a skilled sailor

挑战和困难让人变得更强大，更有经验。
Meaning
Challenges and difficulties make people stronger and more experienced.
Example
Remember, **a smooth sea never made a skilled sailor**—you’ll learn from tough times.
记住，**平静的海洋从未造就过一个熟练的水手** — 你会从困难时光中学习。
idiom

the final frontier

最后或最艰难的挑战或探索领域
Meaning
the last or most difficult challenge or area of exploration
Example
For many scientists, space remains **the final frontier**.
对许多科学家来说，太空依然是**最后的边疆**。
idiom

trust goes both ways

双方必须彼此信任
Meaning
both sides must trust each other
Example
**Trust goes both ways** in any relationship.
任何关系中信任必须是双向的。
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

out with the old, in with the new

用新的东西或想法代替旧的东西
Meaning
to replace old things or ideas with new ones
Example
It's time for **out with the old, in with the new**.
是时候 **告别旧的，迎接新的**。
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。
idiom

judge a book by its cover

仅凭外表形成观点
Meaning
to form an opinion based on appearance only
Example
Don’t **judge a book by its cover**; she’s actually very kind.
不要以貌取人；她实际上非常善良。
idiom

by the way

用于引入新话题或添加额外信息
Meaning
used to introduce a new topic or add extra information
Example
**By the way**, did you finish your project?
**顺便说一句**, 你完成你的项目了吗？
idiom

stand by your principles

在困难的情况下仍然忠于你的价值观
Meaning
to remain loyal to your values, even in difficult situations
Example
She always **stands by her principles** in tough times.
她在困难时期总是坚持自己的原则。
idiom

dawn on

突然明白过来
Meaning
to become clear to someone after not realizing
Example
It suddenly **dawned on** me that I’d left my wallet.
我突然明白我把钱包忘了。
idiom

join forces

为了共同的目标而联合起来
Meaning
to combine efforts with others for a common purpose
Example
Two companies **joined forces** to create a better product.
两家公司联合起来创造出更好的产品。
idiom

pitch in

加入他人共同完成任务或提供帮助
Meaning
to join others in doing a task or helping
Example
Everyone **pitched in** to clean the park.
每个人都一起清理公园。
idiom

have the upper hand

对某人有控制或优势
Meaning
to have control or advantage over someone
Example
After the merger, the larger company **had the upper hand**.
合并后，大公司占据了上风。
idiom

to make matters worse

使糟糕的情况变得更加困难或令人不快
Meaning
to make a bad situation even more difficult or unpleasant
Example
I was already late, and **to make matters worse**, I couldn't find my keys.
我已经迟到了，更糟的是，我找不到我的钥匙。
idiom

a giant leap for mankind

一次重大的或开创性的成就
Meaning
a significant or groundbreaking achievement
Example
The first man landing on the moon was truly **a giant leap for mankind**.
第一个登月的人真的是**人类的伟大飞跃**。
idiom

on good terms with

与某人保持友好和积极的关系
Meaning
having a friendly and positive relationship with someone
Example
She’s **on good terms with** her ex-husband for the kids’ sake.
她为了孩子和前夫保持着良好的关系。
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

play second fiddle

扮演他人下属的角色
Meaning
to take a subordinate role to someone else
Example
He was tired of **playing second fiddle** to his colleague.
他厌倦了在同事面前总是扮演第二小提琴手。
idiom

two peas in a pod

两个非常相似或亲密的人
Meaning
two people who are very similar or close
Example
My sister and I are **like two peas in a pod**.
我和我的妹妹就像两个豌豆一样。
idiom

cut above the rest

比别人更好
Meaning
to be better than others
Example
His presentation was **a cut above the rest**.
他的演讲比别人更好。
idiom

trust your gut

遵循你的直觉或本能
Meaning
to follow your intuition or instincts
Example
When making big decisions, it’s often best to **trust your gut**.
在做出重大决定时，最好 **信任你的直觉**。
idiom

brave the storm

勇敢地面对巨大的困难
Meaning
to face great difficulties with courage
Example
They **braved the storm** to rescue the stranded people.
他们**勇敢地面对风暴**去营救被困的人。
idiom

success is within reach

成功几乎触手可得
Meaning
success is almost attainable
Example
With just a little more effort, **success is within reach**.
再努力一点，成功几乎触手可得。
idiom

tell tales

闲聊或泄露秘密，通常是为了让某人陷入困境
Meaning
to gossip or reveal secrets, often to get someone in trouble
Example
Stop **telling tales** about your coworkers.
停止**谈论八卦**关于你的同事。
idiom

to come clean

承认事实，尤其是当它困难或令人尴尬时
Meaning
to admit the truth, especially when it is difficult or embarrassing
Example
He decided it was time to **come clean** about his mistake.
他决定是时候对自己的错误**坦白**了。
idiom

case closed

事情已经解决或结束
Meaning
the matter is settled or finished
Example
The evidence was clear, so it’s **case closed**.
证据很清楚，所以这是**案件已结**。
idiom

tighten the belt

减少开支；因为经济困难而节省开销
Meaning
to reduce spending; to save money due to financial constraints
Example
In tough economic times, businesses must **tighten the belt** to survive.
在经济困难时期，公司必须勒紧裤腰带以维持生存。
idiom

touch wood

说一些积极的话并希望好运持续
Meaning
to say something positive and hope it continues to be good
Example
We haven’t lost a game yet, **touch wood**.
我们还没有输过一场比赛，敲木头。
idiom

An ear to the ground

意识到周围发生的事情。
Meaning
To be aware of what is happening around you.
Example
If you want to succeed in business, always keep **an ear to the ground**.
如果你想在生意上成功，始终保持**耳朵贴近地面**。
idiom

take the reins

掌控或承担责任
Meaning
to take control or responsibility
Example
After the director retired, she **took the reins** of the company.
在导演退休后，她**接管了**公司的管理。
idiom

no strings attached

没有特殊条件或限制
Meaning
with no special conditions or restrictions
Example
They offered me a free trial with **no strings attached**.
他们为我提供了一个免费试用，没有**no strings attached**
idiom

step on it

加快速度；快点
Meaning
to go faster; to hurry up
Example
We’re late — **step on it**!
我们迟到了——快点！
idiom

as free as a bird

完全自由；无忧无虑
Meaning
completely free; without worries
Example
After the exams, I felt **as free as a bird**.
考试后，我感到完全自由。
idiom

take stock of

在做决定之前仔细审查情况
Meaning
to review a situation carefully before making decisions
Example
Let’s **take stock of** our priorities this quarter.
让我们在本季度评估我们的优先事项。
idiom

phishing

一种通过使用欺骗性的电子邮件、网站或其他通信方式来收集个人信息的方法。
Meaning
A method of trying to gather personal information using deceptive emails, websites, or other communications.
Example
He received an email that looked legitimate, but it was actually a **phishing** attempt.
他收到了一封看起来合法的电子邮件，但其实这是一次**网络钓鱼**尝试。
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

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

a helping hand

帮助或协助他人的人
Meaning
someone who helps or assists others
Example
She offered **a helping hand** to the new student in class.
她为班级里的新学生提供了**一只援助之手**。
idiom

scare the life out of someone

非常吓到某人
Meaning
to frighten someone very badly
Example
That horror movie **scared the life out of me**.
那部恐怖片**把我吓坏了**。
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

corner office

公司中成功或高职位的象征
Meaning
a symbol of success or high position in a company
Example
Everyone dreams of getting the **corner office** one day.
每个人都梦想有一天能得到 **角落办公室**。
idiom

Make up for lost time

为了弥补浪费的时间，做事情做得更快。
Meaning
To do something faster to compensate for wasted time.
Example
We worked overtime to make up for lost time.
我们加班来弥补浪费的时间。
idiom

learning on the fly

在没有准备的情况下快速学习和适应
Meaning
to adapt and learn quickly without prior preparation
Example
AI systems are **learning on the fly** from user data.
人工智能系统正在从用户数据中快速学习。
idiom

fly high

非常成功或快乐
Meaning
to be very successful or happy
Example
After winning the award, she’s been **flying high**.
赢得奖项后，她一直非常高兴。
idiom

make the grade

达到期望的标准或水平
Meaning
to reach the desired standard or level
Example
Only a few students **made the grade** in the final test.
只有少数学生在期末考试中达到了要求的水平。
idiom

on solid ground

处于安全或稳定的状况
Meaning
in a safe or stable situation
Example
After months of hard work, the company is now **on solid ground**.
经过几个月的辛勤工作，公司现在处于稳定的状况。
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

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

daydream about

在清醒时幻想愉快的事情
Meaning
to imagine pleasant things while awake
Example
He often **daydreams about** living on a tropical island.
他常常幻想住在热带岛屿上。
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

come rain or shine

不管发生什么；无论天气或情况如何
Meaning
no matter what happens; in any weather or situation
Example
He goes jogging **come rain or shine**.
无论晴天还是雨天，他都会去跑步。
idiom

get cold feet

突然害怕做某事
Meaning
to suddenly become afraid to do something
Example
He **got cold feet** before proposing to her.
他在向她求婚前突然害怕了。
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

tie in with

与其他事物连接或协调
Meaning
to connect or coordinate with something else
Example
The workshop topics **tie in with** our current curriculum.
研讨会的主题与我们当前的课程 **紧密相关**。
idiom

on the beat

警察的常规巡逻路线
Meaning
a police officer's regular patrol route
Example
The officer was **on the beat** when he spotted the suspect.
当警官在巡逻时，他发现了嫌疑人。
idiom

own up to something

承认或坦白对某事负责
Meaning
to admit or confess responsibility for something
Example
You should **own up to your mistakes** instead of blaming others.
你应该**承认你的错误**，而不是责怪别人。
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

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 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

to goof up

犯愚蠢或粗心的错误
Meaning
to make a silly or careless mistake
Example
She **goofed up** the numbers in the report.
她把报告中的数字弄错了。
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**。