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idiom

one in a million

非常特别或稀有
Meaning
very special or rare
Example
Her kindness makes her **one in a million**.
她的善良使她成为**百万分之一**。
idiom

on the up and up

诚实的；真诚的；没有参与任何不正当行为
Meaning
honest; truthful; not involved in any wrongdoing
Example
She’s always been **on the up and up** with me.
她一直对我非常诚实。
idiom

Old hat

过时的或不再有趣的东西
Meaning
Something that is outdated or no longer interesting
Example
That style is **old hat** now—no one wears it anymore.
那种风格现在已经过时了——没人再穿它了。
idiom

out of the box

富有创意，与通常的想法不同
Meaning
creative and different from usual ideas
Example
Her **out of the box** marketing strategy increased sales rapidly.
她的**out of the box**营销策略迅速提高了销售额。
idiom

on the same page

对某事有相同的理解或达成一致意见
Meaning
to agree or have the same understanding about something
Example
Before we continue, let’s make sure we’re **on the same page**.
在我们继续之前，请确保我们**在同一页面**上。
idiom

out of your mind

疯狂或极度担心
Meaning
crazy or extremely worried
Example
You must be **out of your mind** to drive that fast!
你一定是**疯了**，开这么快！
idiom

on background

提供给记者的信息，无法归属来源
Meaning
information given to a journalist that cannot be attributed to the source
Example
The official spoke **on background** about the new policy.
官方在**on background**谈论新政策。
idiom

One step at a time

逐渐处理任务，而不是一次完成所有的任务。
Meaning
Handle tasks gradually and not all at once.
Example
Don't stress, just take **one step at a time**.
别担心，只需**一步一步来**。
idiom

over the hill

过了巅峰期；不再年轻或处于最佳状态
Meaning
past one's prime; no longer young or at peak performance
Example
Some people think turning forty means you’re **over the hill**, but that’s not true.
有些人认为四十岁意味着你已经**过气了**，但事实并非如此。
idiom

On the record

正式声明并可报告
Meaning
Officially stated and reportable
Example
She made her statement **on the record** during the interview.
她在面试中做了**正式声明**。
idiom

overfitting

当一个模型在训练数据上表现良好，但在未见过的数据上表现差
Meaning
when a model performs well on training data but poorly on unseen data
Example
The model seems to be **overfitting** because it performs well on the training data but poorly on the test set.
模型似乎在**过拟合**，因为它在训练数据上表现良好，但在测试集上表现差。
idiom

open to abuse

容易被滥用或利用
Meaning
liable to be misused or exploited
Example
Facial recognition technology is **open to abuse** if not regulated.
如果不加以监管，人脸识别技术很容易被滥用。
idiom

on the radar

正在被监视或考虑的某事
Meaning
something that is being monitored or considered
Example
The new scientific theory is now **on the radar** of researchers across the world.
新的科学理论现在已经**在雷达上**，全球的研究人员都在关注。
idiom

on the right track

走在通往成功的正确道路上
Meaning
to be going in the correct direction to achieve success
Example
Your plan sounds great — you’re **on the right track**.
你的计划听起来很棒——你走在正确的道路上。
idiom

On the breadline

生活在贫困中或几乎没有钱。
Meaning
Living in poverty or with very little money.
Example
After losing his job, he was almost **on the breadline**.
失业后，他几乎处于**安德布雷德莱恩**状态。
idiom

on the cutting block

被考虑为淘汰或停止
Meaning
being considered for elimination or discontinuation
Example
Due to budget cuts, several research projects are now **on the cutting block**.
由于预算削减，几个研究项目现在处于被淘汰的边缘。
idiom

on the gravy train

处于一种通过少量努力赚取大量金钱的状态
Meaning
to be in a situation where one makes a lot of money with little effort
Example
He’s been riding **on the gravy train** since he took over the family business.
自从接管家族企业以来，他一直在**格雷维火车**上。
idiom

out of the picture

不再涉及或相关
Meaning
no longer involved or relevant
Example
After the gallery closed, the curator was **out of the picture**.
画廊关闭后，策展人不再是其中的一部分。
idiom

on the line

处于危险中；有丢失的风险
Meaning
at risk; in danger of being lost
Example
The company’s reputation is **on the line** after the failed shipment.
在运输失败后，公司的声誉**岌岌可危**。
idiom

on the dot

正好准时；守时
Meaning
exactly on time; punctual
Example
The meeting started **on the dot** at 10 a.m.
会议在早上10点**正好准时**开始。
idiom

on the sly

秘密地; 以狡猾的方式
Meaning
secretly; in a sneaky way
Example
He met her **on the sly** without telling anyone.
他**秘密地**见到她，没告诉任何人。
idiom

out of bounds

不允许或超出可接受的限制
Meaning
not allowed or beyond acceptable limits
Example
His rude comment was **out of bounds**.
他的粗鲁评论超出了界限
idiom

open a Pandora’s box

开始某些会引发许多意外问题的事情
Meaning
to start something that causes many unexpected problems
Example
Unregulated AI development may **open a Pandora’s box** of ethical issues.
未受监管的人工智能开发可能会打开潘多拉的盒子，带来道德问题。
idiom

Out of sight, out of mind

当人或事物不可见或不在场时被遗忘。
Meaning
People or things forgotten when not visible or present.
Example
After moving away, our friendship faded—**out of sight, out of mind**.
搬家后，我们的友谊逐渐消退——**眼不见，心不烦**。
idiom

old buddy old pal

一种亲切地称呼老朋友的方式。
Meaning
An affectionate way to refer to a longtime friend.
Example
Hey **old buddy old pal**, long time no see!
嘿，老朋友，好久不见！
idiom

On the drawing board

在规划或设计阶段
Meaning
In the planning or design stage
Example
The new product is still **on the drawing board**, but it will be launched next year.
新产品仍然处于设计阶段，但将在明年发布。
idiom

on trial

正在被测试或审判
Meaning
being tested or judged
Example
The company is **on trial** for violating privacy laws.
该公司因违反隐私法而正在**受审**。
idiom

offbeat

不寻常；不同于常规
Meaning
unusual; different from the norm
Example
His **offbeat** sense of humor makes everyone laugh.
他的**离经叛道**幽默让每个人都笑了。
idiom

on the house

免费；由店家招待
Meaning
free of charge; paid for by the establishment
Example
The drinks were **on the house** tonight.
今晚的饮料是店家请客的。
idiom

Out of the frying pan and into the fire

从糟糕的情况进入更糟的境地。
Meaning
Going from a bad situation to an even worse one.
Example
Quitting that job put him **out of the frying pan and into the fire**.
辞掉那份工作让他从煎锅跳进了火坑。
idiom

on fire

表现非常好；充满能量和成功
Meaning
performing very well; full of energy and success
Example
The sales team is **on fire** this month!
销售团队这个月表现出色！
idiom

on your own shoulders

对某事负责
Meaning
to be responsible for something yourself
Example
The success of this event rests **on your own shoulders**.
这个事件的成功完全取决于你自己肩膀上的责任。
idiom

out of your league

太好或太强大，无法竞争
Meaning
too good or powerful to compete with
Example
That company is **out of our league** in terms of resources.
这家公司在资源方面超出了我们的竞争范围
idiom

on thin ice

处于危险或危险的境地
Meaning
in a risky or dangerous situation
Example
You are **on thin ice** with that behavior.
你因那种行为而**处于险境**。
idiom

olive branch

和平或和解的姿态
Meaning
a gesture of peace or reconciliation
Example
The president extended an **olive branch** by inviting his rival to the summit.
总统通过邀请他的对手参加峰会来伸出**橄榄枝**。
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

own it

为你是谁或你做的事而感到骄傲
Meaning
to take pride in who you are or what you do
Example
Don’t be shy about your success—**own it**!
不要因你的成功而感到害羞——**自豪吧**！
idiom

Opportunity knocks but once

好机会很少出现，出现时应该把握。
Meaning
Good opportunities are rare and should be seized when they appear.
Example
Don't miss the chance, **opportunity knocks but once**.
不要错过机会，**机会只敲一次门**。
idiom

Old school

拥有传统的观念或价值观；不现代
Meaning
Having traditional ideas or values; not modern
Example
My father still prefers handwritten letters; he’s really **old school**.
我父亲仍然更喜欢手写信件；他真的是老派。
idiom

out of memory

无法清晰思考；精神上筋疲力尽
Meaning
unable to think clearly; mentally exhausted
Example
After working all night, I was completely **out of memory**.
通宵工作后，我精神上完全筋疲力尽。
idiom

open one's heart

真诚地表达感受或情感
Meaning
to express feelings or emotions honestly
Example
She finally decided to **open her heart** and share her feelings.
她终于决定**敞开心扉**，分享她的感受。
idiom

Open-minded

愿意考虑新的想法或意见。
Meaning
Willing to consider new ideas or opinions.
Example
A good therapist must be **open-minded**.
一个好的治疗师必须**思想开放**。
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

out of one’s mind

疯狂或极度担忧
Meaning
crazy or extremely worried
Example
He must be **out of his mind** to drive so fast in the rain.
他一定是**疯了**，才会在雨中开车这么快。
idiom

on one's shoulders

承担某事的责任或负担
Meaning
having the responsibility or burden of something
Example
The success of the project is **on his shoulders**.
项目的成功**落在他肩上**。
idiom

overnight success

一个人或物品非常快速地变得成功
Meaning
a person or thing that becomes successful very quickly
Example
Her first song made her an **overnight success**.
她的第一首歌让她成为了**一夜成名**。
idiom

Open a can of worms

开始做一些会带来许多新问题的事情。
Meaning
To start something that creates many new problems.
Example
By questioning the policy, he **opened a can of worms**.
通过质疑政策，他**打开了一罐蠕虫**。
idiom

opt out

选择不参与
Meaning
to choose not to participate
Example
Employees can **opt out** of the program if they want.
员工可以选择不参加该程序，如果他们愿意的话。
idiom

own the mistake

承担做错事的责任
Meaning
to take responsibility for doing something wrong
Example
A good leader knows how to **own the mistake** and learn from it.
一个好的领导知道如何承担错误并从中学习。
idiom

On a shoestring budget

用很少的钱做事或生活。
Meaning
To live or do something with very little money.
Example
They traveled across Asia **on a shoestring budget**.
他们以**紧张的预算**穿越了亚洲。
idiom

on the level

诚实和真诚; 不试图欺骗
Meaning
honest and sincere; not trying to deceive
Example
You can trust her—she’s **on the level**.
你可以信任她—她非常诚实。
idiom

opt out of

选择不参加某事
Meaning
to choose not to participate in something
Example
You can **opt out of** the newsletter at any time.
你可以随时取消订阅这个通讯。
idiom

outstanding in one’s field

在自己的工作中卓越
Meaning
to be exceptionally good at one’s work
Example
She’s **outstanding in her field** as a scientist.
她作为科学家在自己的领域内卓越。
idiom

Out of focus

不清楚或不专心
Meaning
Not clear or not paying attention
Example
He looked tired and completely **out of focus** during the meeting.
他在会议期间看起来很累，完全没有集中注意力。
idiom

old friend

你认识很久的朋友
Meaning
a friend you have known for a long time
Example
I met an **old friend** from college yesterday.
我昨天遇到了一个大学的老朋友。
idiom

on the same playing field

在相同的条件下或具有相等的机会
Meaning
in the same conditions or with equal chances
Example
We’re now **on the same playing field** as our competitors.
我们现在与我们的竞争对手站在同一起跑线上。
idiom

open channels of communication

建立对话或讨论
Meaning
to establish dialogue or discussion
Example
They tried to **open channels of communication** with the neighboring country.
他们试图与邻国打开沟通渠道。
idiom

on the grapevine

间接听到八卦或谣言
Meaning
to hear gossip or rumor indirectly
Example
I heard **on the grapevine** that they’re getting divorced.
我**从八卦中听说**他们要离婚了。
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

on top of the world

感到非常快乐和成功
Meaning
to feel extremely happy and successful
Example
After winning the award, he felt **on top of the world**.
在赢得奖项后，他觉得自己是世界之巅。
idiom

open-hearted

善良和诚实地表达感情
Meaning
kind and honest in expressing feelings
Example
She is an **open-hearted** person who always listens.
她是一个心地善良的人，总是倾听。
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

offline mode

断开互联网或无法使用的状态
Meaning
a state of being disconnected from the internet or unavailable
Example
He’s been in **offline mode** all weekend, not answering any messages.
他整个周末都处于离线模式，没有回复任何消息。
idiom

own up to

承认或坦白你做错的事情
Meaning
to admit or confess to something you did wrong
Example
She finally **owned up to** breaking the vase.
她最终**承认**打破了花瓶。
idiom

open a new chapter

在生活中开始新的阶段或时期
Meaning
to begin a new stage or period in life
Example
Graduating from university **opened a new chapter** in her life.
大学毕业 **开启了她生活的新篇章**。
idiom

on the stand

作为证人在法庭上作证
Meaning
testifying as a witness in court
Example
She was nervous when she was **on the stand**.
她在 **证人席** 上时感到很紧张。
idiom

off the wall

不寻常或非常规
Meaning
unusual or unconventional
Example
His ideas are often **off the wall**, but they sometimes work.
他的想法常常**off the wall**，但有时会有效。
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

on the fast track

在职业或项目中快速进展
Meaning
advancing quickly in a career or project
Example
He is **on the fast track** to becoming a manager.
他正在**快速通道**上成为经理。
idiom

on edge

感到紧张、烦躁或易怒
Meaning
to be nervous, tense, or irritable
Example
She’s been **on edge** since the exam started.
自从考试开始以来，她一直很紧张。
idiom

own your mistakes

对自己犯的错误承担责任。
Meaning
to take responsibility for what you did wrong.
Example
It’s important to **own your mistakes** and learn from them.
重要的是要**承担自己的错误**并从中学习。
idiom

out of shape

由于缺乏锻炼而变得不健康或不适合
Meaning
to be unfit or unhealthy due to lack of exercise
Example
I’m so **out of shape** after sitting at a desk all day.
我整天坐在桌子前，完全不健康了。
idiom

on the tip of one's tongue

当你几乎记得某事但不完全
Meaning
when you can almost remember something but not quite
Example
His name is **on the tip of my tongue**, but I can’t recall it.
他的名字就在我嘴边，但我想不起来。
idiom

out of the box thinking

以新颖、创新或创造性的方式思考
Meaning
thinking in a new, innovative, or creative way
Example
The solution requires **out of the box thinking** from all team members.
该解决方案需要所有团队成员进行**跳出思维定式的思考**。
idiom

out of sorts

感到稍微不舒服或不高兴
Meaning
feeling slightly unwell or upset
Example
He’s been **out of sorts** since he caught that cold.
自从感冒后，他就一直有些不高兴。
idiom

offstage

在公众视野之外或私人生活中
Meaning
outside of public attention or in private life
Example
He is very different **offstage** than he appears in his shows.
他在舞台下的表现与他在节目中展现的完全不同。
idiom

out of left field

某事出乎意料或令人惊讶
Meaning
something unexpected or surprising
Example
His question came **out of left field** and shocked everyone.
他的提问**out of left field**，让所有人都感到震惊。
idiom

open and shut case

一个容易决定或显而易见的案件
Meaning
a case that is easily decided or obvious
Example
It was an **open and shut case** with clear evidence.
这是一个有明确证据的显而易见的案件。
idiom

on one’s last legs

接近力气或生命的尽头
Meaning
to be near the end of one’s strength or life
Example
After the long hike, we were all **on our last legs**.
经过长时间的徒步旅行后，我们都快撑不住了。
idiom

off to a flying start

以非常成功的方式开始某事，像旅行一样
Meaning
to begin something, like a journey, very successfully
Example
Our trip was **off to a flying start** with perfect weather.
我们的旅行以完美的天气顺利开始。
idiom

once in a while

有时候，但不是很频繁
Meaning
sometimes, but not very often
Example
I enjoy eating out **once in a while**, but I prefer home-cooked meals.
我喜欢偶尔出去吃饭，但我更喜欢家常菜。
idiom

on the cutting edge

处于创新或技术的前沿
Meaning
at the forefront of innovation or technology
Example
The laboratory is **on the cutting edge** of artificial intelligence research.
实验室处于人工智能研究的前沿。
idiom

out of balance

感觉精神或情感上不稳定
Meaning
to feel mentally or emotionally unstable
Example
Lack of rest can make you feel **out of balance**.
缺乏休息可能会让你感到失衡。
idiom

on the horizon

即将发生
Meaning
likely to happen soon
Example
A new product launch is **on the horizon**.
新产品的发布即将到来。
idiom

once bitten, twice shy

在一次不愉快的经历之后，你会小心避免它再次发生
Meaning
after an unpleasant experience, you are careful to avoid it happening again
Example
After losing money in the stock market, he became **once bitten, twice shy**.
在股市中失去钱后，他变得**一旦受伤，两次害羞**。
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

off the beaten track

在一个很少有人去的地方；偏远或不寻常
Meaning
in a place not visited by many people; remote or unusual
Example
We found a lovely beach **off the beaten track**.
我们发现了一个美丽的海滩，远离人群。
idiom

out like a light

很快就睡着了
Meaning
to fall asleep very quickly
Example
He was **out like a light** as soon as his head hit the pillow.
他的头一碰到枕头就睡着了。
idiom

on the rocks

处于困境或可能失败（特别是关系或婚姻）
Meaning
in trouble or likely to fail (especially a relationship or marriage)
Example
Their marriage is **on the rocks** after constant arguments.
他们的婚姻在**困境中**，因为不断争吵。
idiom

out of the frying pan into the fire

从糟糕的情况进入更糟糕的情况
Meaning
to go from a bad situation to a worse one
Example
Leaving that job was like jumping **out of the frying pan into the fire**.
离开那份工作就像是跳**出火坑进火海**。
idiom

on shaky ground

在不确定或不稳定的情况下
Meaning
in an uncertain or unstable situation
Example
His business is **on shaky ground** after the market crash.
他的生意在市场崩溃后**岌岌可危**。
idiom

on the witness stand

在法庭上作证
Meaning
to be giving testimony in court
Example
The victim was nervous while **on the witness stand**.
受害者在证人席上很紧张。
idiom

Out to pasture

让某人或某物退出活跃使用。
Meaning
To retire someone or something from active use.
Example
The old manager was finally **put out to pasture** last year.
那位老经理去年终于退休了。
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

off the beaten path

做一些不寻常或原创的事情
Meaning
doing something unusual or original
Example
Her ideas are always **off the beaten path**.
她的想法总是**与众不同**。
idiom

on the world stage

在国际舞台上
Meaning
in the international arena or community
Example
The country's economy is now strong **on the world stage**.
这个国家的经济现在在国际舞台上很强。
idiom

on the rise

价值或数量正在增加或增长
Meaning
increasing or growing in value or number
Example
Tech stocks are **on the rise** this quarter.
本季度科技股正在**上涨**。
idiom

Out of one’s depth

处于一种过于难以理解或应对的情况。
Meaning
To be in a situation that is too difficult to understand or deal with.
Example
I felt **out of my depth** in that technical discussion.
在那次技术讨论中，我感到**超出我的深度**。
idiom

on the front line

直接参与某事中最活跃或最危险的部分
Meaning
directly involved in the most active or dangerous part of something
Example
Doctors were **on the front line** during the pandemic.
在疫情期间，医生们**在前线**。
idiom

old friends are gold

老朋友是宝贵和珍贵的
Meaning
old friends are precious and valuable
Example
I always say, **old friends are gold**.
我总是说，**老朋友是黄金**。
idiom

on the market

可供出售
Meaning
available for sale
Example
Their house has been **on the market** for over six months.
他们的房子已经在市场上待了超过六个月。
idiom

on the same wavelength

与某人以相似的方式思考
Meaning
to think in a similar way as someone else
Example
My best friend and I are always **on the same wavelength**.
我和我最好的朋友总是保持同样的思路。
idiom

on good terms

保持友好和平的关系
Meaning
to have a friendly and peaceful relationship
Example
They are still **on good terms** even after the breakup.
他们即使分手后仍然关系很好。
idiom

out of this world

极其好或令人印象深刻
Meaning
extremely good or impressive
Example
The food at that restaurant is **out of this world**.
那家餐厅的食物令人赞叹。
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

out of orbit

失去控制; 偏离常规路线
Meaning
beyond control; off the usual path
Example
The project went **out of orbit** after the manager left.
项目在经理离开后**离轨**了。
idiom

on the right side of the law

合法行事; 不违反任何法律
Meaning
acting legally; not breaking any laws
Example
He wants to stay **on the right side of the law**.
他想保持 **在法律的正确一方**。
idiom

over the moon

非常高兴或开心
Meaning
extremely pleased or happy
Example
She was **over the moon** when she won the prize.
她在赢得奖品时**over the moon**。
idiom

online presence

一个人或企业在互联网上的存在和活动
Meaning
the existence and activity of a person or business on the internet
Example
A strong **online presence** is essential for digital marketing.
强大的**在线存在**对于数字营销至关重要。
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

on your plate

需要你处理的责任或工作
Meaning
something that is your responsibility or job to handle
Example
I have too much **on my plate** right now with all the projects.
现在我有太多的事情 **在我的盘子里**，有所有的项目。
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

out of harm’s way

远离危险或困难。
Meaning
To be safe from danger or difficulty.
Example
Make sure the children are **out of harm’s way** before lighting the fire.
在点火之前，确保孩子们远离危险。
idiom

out for blood

极其决心打败或惩罚某人
Meaning
to be extremely determined to defeat or punish someone
Example
After losing last time, the team is **out for blood** this season.
上次输了之后，队伍本赛季决心复仇。
idiom

on the warpath

非常生气并且可能争论或打架
Meaning
very angry and likely to argue or fight
Example
She was **on the warpath** after hearing the bad news.
她听到坏消息后非常生气。
idiom

own up to your mistakes

承认你做错了事
Meaning
to admit that you have done something wrong
Example
It takes courage to **own up to your mistakes**.
承认自己的错误需要勇气。
idiom

on the ball

机警、聪明并且反应迅速
Meaning
alert, smart, and quick to react
Example
You need to be **on the ball** to handle this job.
你需要非常机警才能处理这份工作。
idiom

open Pandora’s box

开始做会引发许多意想不到问题的事情
Meaning
to start something that causes many unforeseen problems
Example
Creating sentient AI could **open Pandora’s box** of ethical challenges.
创造有感知的人工智能可能会打开伦理挑战的潘多拉盒子。
idiom

on the stump

为政治职位竞选，特别是在公共场合发表演讲
Meaning
to campaign for political office, especially by giving speeches in public
Example
The candidate has been **on the stump** for weeks, rallying support across the country.
候选人已经在**竞选**了几个星期，在全国各地争取支持。
idiom

on your last legs

完全筋疲力尽或濒临崩溃
Meaning
completely exhausted or near collapse
Example
After working 18 hours straight, I was **on my last legs**.
连续工作了18小时后，我已经**精疲力尽**了。
idiom

open up

变得愿意分享想法或开始操作
Meaning
to become willing to share thoughts or to start operating
Example
He finally **opened up** about the challenges he’s facing.
他终于开始谈论他面临的挑战。