Open book
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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。
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

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 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

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 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

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

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

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

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
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

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

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

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 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

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

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

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 yourself to

允许自己体验情感或连接
Meaning
to allow yourself to experience emotions or connections
Example
He finally decided to **open himself to** love again.
他最终决定再次向爱敞开心扉。
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 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

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

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 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

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

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

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

off script

偏离预定的计划或演讲
Meaning
to deviate from a prepared plan or speech
Example
During the meeting, he went **off script** and made some bold statements.
在会议期间，他**离开剧本**并做出了一些大胆的陈述。
phrasal-verb

offer help

在某人需要帮助时提供帮助
Meaning
to volunteer to assist someone kindly
Example
It’s thoughtful to **offer help** when someone is struggling.
当有人在困难中时提供帮助是体贴的表现。
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

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。
phrasal-verb

open up to diversity

开放多样性
Meaning
to become accepting and appreciative of different backgrounds or perspectives
Example
Education helps people **open up to diversity** and reduce prejudice.
教育帮助人们开放多样性并减少偏见。
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

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。
phrasal-verb

open up to others

与其他文化的人分享思想和感受
Meaning
to share thoughts and feelings with people from other cultures
Example
When you **open up to others**, you start to understand their perspectives better.
当你**向他人敞开心扉**时，你会开始更好地理解他们的观点。
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

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

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

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

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。
phrasal-verb

open doors for

为连接或合作创造机会或可能性
Meaning
to create opportunities or possibilities for connection or collaboration
Example
Joining community events can **open doors for** meaningful relationships.
加入社区活动可以为**有意义的关系打开大门**。
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

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

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

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。
phrasal-verb

open up to feedback

愿意听取并接受建设性的批评
Meaning
to be willing to listen and accept constructive criticism
Example
A good leader must **open up to feedback** from the team.
一个好的领导者必须**对反馈开放**来自团队。
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。
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。
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

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。
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

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**。
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。
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

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。
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。
phrasal-verb

open up to someone

与您信任的人分享个人感受或问题
Meaning
to share personal feelings or problems with someone you trust
Example
He finally **opened up to** his friend about what he had been going through.
他终于**对他的朋友敞开心扉**，讲述了他经历的事情。
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

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

own up

承认或坦白某事
Meaning
to admit or confess to something.
Example
He finally **owned up** to breaking the vase.
他终于**承认**打破了花瓶。
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**。
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。
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。
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 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

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

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**。
phrasal-verb

open dialogue with

与其他文化或群体开始对话或讨论
Meaning
to start conversations or discussions with another culture or group
Example
The organization aims to **open dialogue with** minority communities.
该组织旨在**与**少数群体**开展对话**。
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 the blue

出乎意料或没有预警
Meaning
unexpectedly or without warning
Example
My old friend called me **out of the blue** after ten years.
我十年后**突然**接到了老朋友的电话。
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。
phrasal-verb

open up space for joy

在痛苦之后为快乐腾出情感空间
Meaning
to make emotional room for happiness after pain
Example
After forgiving herself, she began to **open up space for joy**.
原谅自己后，她开始为快乐腾出空间。
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 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 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

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 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 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

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

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 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**。
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**。
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**。
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

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。
phrasal-verb

own up to mistakes

公开承认错误，以便可以修正
Meaning
to admit errors openly so they can be fixed
Example
Good leaders **own up to mistakes** before they snowball.
好的领导者在错误变得严重之前会承认错误。
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**。
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**。
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

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 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

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

on the mend

从疾病或受伤中恢复
Meaning
recovering from an illness or injury
Example
I was sick last week, but I’m **on the mend** now.
我上周生病了，但现在正在恢复中。
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 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**。
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。
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

own responsibility for

接受你为发生的事情负责
Meaning
to accept that you are accountable for something that happened
Example
He chose to **own responsibility for** the team’s delay.
他选择为团队的延误负责。
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

on air

现场直播；在电视或广播中播放
Meaning
broadcasting live; being aired on television or radio
Example
The radio show will be **on air** from 7 to 9 PM.
广播节目将在晚上7点到9点**现场直播**。
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

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。
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

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 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 around

与附近的人友好并且情感上可接触
Meaning
to act friendly and emotionally available with people nearby
Example
She always **opens around** people she trusts.
她总是向她信任的人敞开心扉。
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 the floodgates

允许某事在大规模上发生；触发连锁反应
Meaning
to allow something to happen on a large scale; to trigger a chain reaction
Example
When the security flaw was leaked, it **opened the floodgates** for hackers worldwide.
当安全漏洞泄露时，它为全球的黑客**打开了洪水闸门**。
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。
phrasal-verb

open with

通过做或说某事来开始某事
Meaning
to begin something by doing or saying something specific
Example
He **opened with** a personal story to connect with the audience.
他通过讲述一个个人故事开始，以便与观众建立联系。
phrasal-verb

own your progress

为个人成长感到骄傲并承认它
Meaning
to take pride in and acknowledge your personal growth
Example
You should **own your progress** and celebrate every small win.
你应该**own your progress**，并庆祝每一个小小的胜利。
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

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

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

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

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 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！
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

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

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。
phrasal-verb

open up trade

通过消除障碍使国际贸易更容易
Meaning
to make international trade easier by removing barriers
Example
The new agreement will **open up trade** between the two nations.
新协议将**开放贸易**，促进两国之间的贸易。