overfitting
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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。
phrasal-verb

overflow with

充满积极的情感或情绪
Meaning
to have a large amount of positive feeling or emotion
Example
The parents were **overflowing with** pride at their son’s success.
父母因儿子的成功而**满溢着**骄傲。
phrasal-verb

open your mind to

开始考虑或接受新的思想或意见
Meaning
to start considering or accepting new ideas or opinions
Example
Studying anthropology can help you **open your mind to** cultural diversity.
学习人类学可以帮助你打开思维，接受文化多样性。
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 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

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。
phrasal-verb

open relations with

与另一个国家建立正式或友好的关系
Meaning
to start official or friendly relations with another country
Example
After years of tension, the two countries agreed to **open relations with** each other.
经过多年的紧张关系，两国同意与彼此建立关系。
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

off the top of one's head

未经仔细思考或核对就说出某事
Meaning
to say something without thinking carefully or checking
Example
**Off the top of my head**, I think there are five options.
我想，大概有五个选项。
phrasal-verb

open up communication

开始或改善诚实和清晰的沟通
Meaning
to start or improve honest and clear communication
Example
They tried to **open up communication** to solve their issues.
他们试图**打开沟通**以解决他们的问题。
phrasal-verb

open up opportunities

创造新的学习或联系的机会
Meaning
to create new chances or possibilities for learning or connection
Example
Understanding other cultures can **open up opportunities** for collaboration.
了解其他文化可以为合作打开新机会
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。
phrasal-verb

own the mistake quickly

立即承认错误
Meaning
to admit an error right away
Example
I **own the mistake quickly** and explain the fix to my team.
我会立即承认错误，并向团队解释解决方案。
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

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

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。
phrasal-verb

open out to

变得更加开放或欢迎新的文化或体验
Meaning
to become more receptive or welcoming toward new cultures or experiences
Example
Traveling helped her **open out to** different perspectives.
旅行帮助她更加开放地接纳不同的视角。
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**。
phrasal-verb

open up new perspectives

帮助某人以新的或不同的方式看待事物
Meaning
to help someone see things in a new or different way
Example
Traveling to different countries can **open up new perspectives** on life.
到不同的国家旅行可以 **开启新的视角** 关于生活。
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 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

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。
phrasal-verb

open oneself to

让自己体验或理解新思想或文化
Meaning
to allow oneself to experience or understand new ideas or cultures
Example
Living abroad helped him **open himself to** diverse ways of life.
在国外生活帮助他**开放自己**接受不同的生活方式。
phrasal-verb

open up new horizons

创造新的机会以学习或理解不同的文化
Meaning
to create new opportunities for learning or understanding different cultures
Example
Studying abroad can **open up new horizons** for personal and cultural growth.
出国留学可以为个人和文化成长**打开新的视野**。
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

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

out of bandwidth

太忙或太累，无法处理更多任务
Meaning
too busy or overwhelmed to handle more tasks
Example
I’m **out of bandwidth** today, can we talk tomorrow?
我今天太忙了，我们明天可以谈吗？
phrasal-verb

open your heart to

自由表达爱、信任或关心
Meaning
to express love, trust, or care freely
Example
It’s important to **open your heart to** those who care about you.
重要的是**向关心你的人敞开心扉**。
idiom

off the top of my head

没有太多思考或准备
Meaning
without much thought or preparation
Example
Off the top of my head, I’d say we need more time.
我会说我们需要更多的时间，虽然只是随便说说。
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

Open book

一个容易理解或透明的人
Meaning
Someone who is easy to understand or transparent.
Example
She’s an **open book**; you always know what she’s thinking.
她是一本**open book**; 你总是知道她在想什么。
idiom

off the hook

摆脱某事的指责或责任
Meaning
to be free from blame or responsibility for something
Example
He was **off the hook** after his friend confessed.
在他的朋友承认之后，他摆脱了责任。
phrasal-verb

open within

与内心情感连接，更好地理解自己
Meaning
to connect with your inner emotions and understand yourself better
Example
Yoga helps me to **open within** and feel peaceful.
瑜伽帮助我**open within**并感到平静。
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

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。
phrasal-verb

open minds through dialogue

通过开放的交流促进不同文化之间的理解
Meaning
to encourage understanding between cultures by communicating openly
Example
The conference aimed to **open minds through dialogue** between communities.
会议的目的是在社区之间通过**对话开启思维**。
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

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。
phrasal-verb

open the lines of communication

在一段沉默之后重新开始交谈
Meaning
to start talking again after a period of silence
Example
She wanted to **open the lines of communication** with her best friend again.
她想再次与她最好的朋友**打开沟通渠道**。
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。
phrasal-verb

open up to change

愿意接受新思想或实践
Meaning
to become willing to accept new ideas or practices
Example
Societies progress when people **open up to change**.
当人们愿意接受变化时，社会会进步。
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

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 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

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

Out of fashion

不再流行或受欢迎
Meaning
No longer trendy or popular
Example
Those jeans went **out of fashion** years ago.
那些牛仔裤多年前就不流行了。
phrasal-verb

open up trade routes

为国际商品交换创造新的道路
Meaning
to create new paths for international exchange of goods
Example
They are negotiating to **open up trade routes** with neighboring countries.
他们正在与邻国谈判，以**开放贸易路线**。
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

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

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**。
phrasal-verb

open up to trade

开始允许国际贸易或经济交换
Meaning
to start allowing international trade or economic exchange
Example
Many developing nations are trying to **open up to trade** to attract foreign investment.
许多发展中国家正在努力**开放贸易**以吸引外国投资。
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

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

over the horizon

即将发生的事情
Meaning
something that is expected to happen soon
Example
A big change in the market may be **over the horizon**.
市场上可能会有重大变化。
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

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

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**。
phrasal-verb

open up inside

让自己情感上开放并认出自己的真实情感
Meaning
to become emotionally available to yourself and recognize your true emotions
Example
When he learned to **open up inside**, he finally stopped hiding his pain.
当他学会了**open up inside**时，他终于停止了隐藏自己的痛苦。
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 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。
phrasal-verb

open doors to

为文化连接或理解创造机会
Meaning
to create opportunities for cultural connection or understanding
Example
Cultural exchange programs **open doors to** meaningful friendships worldwide.
文化交流项目**打开通往**全球有意义的友谊。
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

on all fours

用手和膝盖爬行
Meaning
crawling on hands and knees
Example
The baby moved **on all fours** across the floor.
宝宝**四肢着地**在地板上爬行。
phrasal-verb

open yourself up to

允许自己表达感情或变得脆弱
Meaning
to allow yourself to express feelings or be vulnerable
Example
He learned to **open himself up to** love again.
他学会了再次对爱情敞开心扉。
phrasal-verb

open out with

开始与某人坦诚地表达情感
Meaning
to start being honest and expressive with someone about emotions
Example
She **opened out with** her husband about her anxiety.
她向丈夫敞开心扉，谈论她的焦虑。
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。
phrasal-verb

open out of yourself

自由地表达你的真实感受；变得情感上可接近
Meaning
to express your true feelings freely; to become emotionally available
Example
It's healthy to **open out of yourself** when you're feeling overwhelmed.
当你感到不堪重负时，**情感开放**是健康的。
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

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

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

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

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

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。
phrasal-verb

open with gratitude

通过表达感谢来开始对话或消息
Meaning
to start a conversation or message by expressing thanks
Example
She **opened with gratitude** before discussing the main issue.
她在讨论主要问题之前先表达了感激之情。
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

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**。
phrasal-verb

open through

通过经历另一种文化的经验来获得理解
Meaning
to access understanding by going through experiences of another culture
Example
You can **open through** empathy to truly understand cultural values.
你可以通过**open through**同理心来真正理解文化价值。
phrasal-verb

open onto

通向一个地方或连接的机会
Meaning
to lead to a place or opportunity for connection
Example
This conversation could **open onto** a deeper understanding between us.
这段对话可能会**开向**我们之间更深的理解。
idiom

on cue

在正确的时刻
Meaning
exactly at the right moment
Example
The dog barked **on cue** when the actor opened the door.
演员一开门，狗狗**准时**叫了。
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。
phrasal-verb

open out your heart

与某人真诚地分享你深刻的情感
Meaning
to share your deep emotions honestly with someone
Example
He finally **opened out his heart** to his best friend.
他终于向他最好的朋友敞开了心扉。
phrasal-verb

opt against

决定不选择特定选项
Meaning
to decide not to choose a particular option
Example
After considering the risks, the company **opted against** the merger.
在考虑了风险之后，公司**选择反对**合并。
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 the spot

立即做出决定
Meaning
to make a decision immediately
Example
He was asked to decide **on the spot**.
他被要求**当场**做出决定。
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

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。
phrasal-verb

open up about kindness

诚实地谈论善行或感恩之事
Meaning
to speak honestly about acts of kindness or gratitude
Example
He finally **opened up about kindness** he received from strangers.
他终于**开放关于善良**，他从陌生人那里获得的善意
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

on the big screen

出现在电影中
Meaning
appearing in a cinema film
Example
Her novel was adapted **on the big screen** last year.
她的小说去年在**大银幕上**改编。
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

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

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

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

over it

对某事不再感兴趣或受到影响
Meaning
no longer interested or affected by something
Example
I'm totally **over it** now.
我现在完全不在意了。
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

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。
phrasal-verb

open up to courage

允许勇气和自信进入一个人的内心
Meaning
to allow bravery and confidence to enter one’s mind
Example
She slowly **opened up to courage** after years of doubt.
在多年的怀疑之后，她慢慢地**向勇气敞开心扉**。
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。
phrasal-verb

open up to challenges

愿意以信心面对或接受困难的情况
Meaning
to be willing to face or accept difficult situations with confidence
Example
If you want to grow, you must **open up to challenges** instead of avoiding them.
如果你想成长，你必须**open up to challenges**，而不是回避它们。
idiom

outside the box

以不寻常或非常规的方式思考或行动
Meaning
thinking or acting in an unusual or unconventional way
Example
To solve this problem, we need to think **outside the box**.
为了解决这个问题，我们需要**跳出框框**思考。
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**。
phrasal-verb

open access to opportunities

使教育、工作或服务可供更多人使用
Meaning
to make education, jobs, or services available to more people
Example
Digital transformation helps **open access to opportunities** globally.
数字化转型有助于在全球范围内**打开机会的大门**。
phrasal-verb

open your heart

变得更加情感上可用或充满爱
Meaning
to become more emotionally available or loving
Example
She decided to **open her heart** to love again.
她决定再次**敞开心扉**去爱。
idiom

off the rails

变得失控或混乱
Meaning
to become uncontrolled or chaotic
Example
After his friend moved away, his life went **off the rails**.
他的朋友搬走后，他的生活变得失控。
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

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。
phrasal-verb

open hearts to

向其他文化的人们展示善良和接受
Meaning
to show kindness and acceptance toward people of other cultures
Example
We should **open our hearts to** people who are different from us.
我们应该**向不同于我们的人敞开心扉**。
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。
phrasal-verb

open out emotionally

开始自由地表达感情
Meaning
to start expressing feelings freely
Example
It took her months to **open out emotionally** after the breakup.
她花了几个月才在分手后**情感上开放**。
phrasal-verb

own out of

由于道德问题而停止参与
Meaning
to stop being involved because of ethical concerns
Example
The company **owned out of** the project due to ethical issues.
公司因道德问题退出了项目。
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 cloud nine

极度快乐; 欣喜若狂
Meaning
extremely happy; overjoyed
Example
She was **on cloud nine** after getting the job.
她在得到工作后 **云上九**。
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

Out of curiosity

出于想要知道或学习某事的愿望。
Meaning
Because of a desire to know or learn something.
Example
I asked him **out of curiosity**, not to interfere.
我出于**好奇**问了他，而不是为了干涉。
phrasal-verb

open up to ideas

接受新颖和不同的想法
Meaning
to be receptive to new and different ideas
Example
We should **open up to ideas** from junior staff as well.
我们也应该接受来自初级员工的想法。
phrasal-verb

open yourself up

使自己情感脆弱或诚实
Meaning
to make yourself emotionally vulnerable or honest
Example
It’s hard to **open yourself up** after being hurt.
在受伤后，**打开自己**是很难的。
idiom

on the run

试图避开警察的追捕
Meaning
trying to avoid being caught by the police
Example
The suspect has been **on the run** for three days.
嫌疑人已经**on the run**三天了。
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

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

off the air

停止广播
Meaning
no longer being broadcasted
Example
The show went **off the air** after ten years.
该节目在十年后停止了广播。
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。