know someone inside out
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idiom

know someone inside out

非常了解某人
Meaning
to know someone very well
Example
I **know her inside out**; we’ve been friends for years.
我非常了解她；我们已经是多年的朋友了。
idiom

Know your stuff

对某事有知识或技能
Meaning
to be knowledgeable or skilled about something
Example
You can tell she really **knows her stuff** about physics.
你可以说她对物理学真的很了解。
idiom

keep one's nose to the grindstone

努力工作并持续不断地工作
Meaning
to work hard and continuously
Example
If you **keep your nose to the grindstone**, you'll achieve your goals.
如果你**保持不断努力工作**，你将实现你的目标。
idiom

key in

使用键盘或数字键盘输入数据
Meaning
to enter data using a keyboard or keypad
Example
Please **key in** your code before the door locks.
请在门锁之前输入您的代码。
idiom

keep your head in the game

保持精神集中并保持动力
Meaning
to stay mentally focused and motivated
Example
Even when things get tough, **keep your head in the game**.
即使事情变得困难，**保持专注在比赛中**。
idiom

keep faith

保持信念
Meaning
to continue believing in something or someone
Example
Even in tough times, you must **keep faith**.
即使在困难时期，你也必须保持信念。
idiom

keep the fire burning

保持火焰
Meaning
to stay motivated and passionate about something
Example
Even after failure, he managed to **keep the fire burning**.
即使失败后，他仍然能够保持火焰。
phrasal-verb

keep inflation in check

控制通货膨胀并防止其过度上涨
Meaning
to control inflation and prevent it from rising too much
Example
The government is trying to **keep inflation in check** through monetary policies.
政府正在通过货币政策试图**控制通货膨胀**。
idiom

keep it up

继续做好某事
Meaning
to continue doing something well
Example
You’re doing great with your studies—**keep it up**!
你在学业上做得很好——**继续加油**！
idiom

keep an eye on someone

仔细观察某人，因为你不完全信任他们
Meaning
to watch someone carefully because you don’t trust them completely
Example
I’ll **keep an eye on him** while you’re away.
当你不在时，我会**盯着他**。
idiom

keep the momentum

保持势头
Meaning
to continue progressing without slowing down
Example
We need to **keep the momentum** to reach our target.
我们需要保持势头以实现我们的目标。
phrasal-verb

knock off

在一天结束时停止工作
Meaning
to stop working at the end of the day
Example
Let’s **knock off** early today and grab dinner together.
今天我们早点结束工作，然后一起去吃晚餐。
phrasal-verb

keep up

维持或继续一种习惯或传统
Meaning
to maintain or continue a custom or tradition
Example
Our family still **keeps up** the tradition of making homemade sweets on Eid.
我们的家庭仍然保持着在开斋节做自制甜点的传统。
phrasal-verb

keep up morale

保持团队精神和积极的能量
Meaning
to maintain team spirit and positive energy
Example
The coach worked hard to **keep up morale** after the team’s loss.
教练在球队失利后努力**保持士气**。
phrasal-verb

keep alive

确保文化传统继续存在
Meaning
to make sure cultural traditions continue to exist
Example
Artists work hard to **keep alive** the spirit of folk art.
艺术家们努力工作，以确保民间艺术的精神得以保持。
idiom

kick out

强迫某人离开
Meaning
to force someone to leave
Example
Security **kicked out** the rowdy fans before the end.
保安在结束前**踢出了**吵闹的球迷。
idiom

keep it together

在困难时刻保持冷静
Meaning
to stay composed during difficult times
Example
Even after hearing the bad news, he managed to **keep it together**.
即使在听到坏消息后，他也能够保持冷静。
phrasal-verb

keep the market afloat

防止市场崩溃或下降
Meaning
to prevent the market from collapsing or declining
Example
The stimulus package helped **keep the market afloat** during the crisis.
刺激计划帮助**保持市场漂浮**，在危机期间。
phrasal-verb

keep up your hopes

保持相信一切会好转
Meaning
to stay confident that things will turn out well
Example
Even in difficult times, she managed to **keep up her hopes**.
即使在困难时刻，她也成功地**保持了她的希望**。
idiom

keep moving forward

尽管有障碍或挫折，也要继续前进
Meaning
to continue progressing despite obstacles or setbacks
Example
No matter what happens, always **keep moving forward**.
无论发生什么，都要继续前进。
phrasal-verb

kick tricky issues up

将复杂问题提升到更高的层级
Meaning
to escalate complicated problems to a higher level
Example
Service reps **kick tricky issues up** when policy decisions are needed.
服务代表在需要政策决策时**kick tricky issues up**
idiom

Keep at it

继续尝试，即使很困难。
Meaning
Continue trying even when it’s hard.
Example
Don’t give up—just **keep at it**.
不要放弃—继续努力。
idiom

kindness goes a long way

一小个善举可能带来巨大的积极影响
Meaning
a small act of kindness can have a big positive impact
Example
Remember, **kindness goes a long way** in building good relationships.
记住，**善良有很大的作用**在建立好关系时。
phrasal-verb

keep your spirits up

在困难时保持愉快和充满希望
Meaning
to stay cheerful and hopeful in tough times
Example
Even during stress, try to **keep your spirits up**.
即使在压力下，也要尽力保持**愉快的心情**。
phrasal-verb

keep up the momentum

继续以相同的精力和热情工作
Meaning
to continue working with the same energy and enthusiasm
Example
After achieving success, the team must **keep up the momentum**.
成功后，团队必须**保持势头**。
phrasal-verb

keep in touch with

与某人保持联系或沟通
Meaning
to maintain contact or communication with someone over time
Example
Even after graduation, they promised to **keep in touch with** each other.
即使毕业后，他们承诺要与彼此保持联系。
idiom

key in on

专注于某个特定的事物
Meaning
to give focused attention to something specific
Example
The coach asked the team to **key in on** their defensive mistakes.
教练要求团队**专注于**他们的防守错误。
phrasal-verb

keep up with studies

保持与他人相同的学术进展水平
Meaning
to stay at the same level as others in your academic progress
Example
It's important to **keep up with studies** to avoid falling behind in class.
保持**与学习同步**，以免在课堂中落后。
idiom

keep your eyes peeled

保持警惕并仔细观察
Meaning
to stay alert and watch carefully
Example
Keep your eyes peeled for any signs of trouble.
注意任何问题的迹象。
phrasal-verb

keep projects on track

确保工作在计划和范围内进行
Meaning
to ensure work stays within schedule and scope
Example
Daily standups help us **keep projects on track** despite surprises.
每日站立会议帮助我们**保持项目在轨道上**，尽管有惊讶。
idiom

Keep an even keel

保持冷静和稳定，尤其在困难时期。
Meaning
To stay calm and steady, especially during difficulties.
Example
Despite the pressure, she **kept an even keel** throughout the project.
尽管面临压力，她在整个项目中保持冷静。
idiom

kick the bucket

死（非正式）
Meaning
to die (informal)
Example
He finally **kicked the bucket** after a long illness.
他终于在长时间的疾病后**去世了**。
phrasal-verb

keep learning forward

即使失败后仍然继续学习
Meaning
to continue gaining lessons even after failing
Example
No matter how many times you fail, just **keep learning forward**.
无论你失败多少次，继续学习。
idiom

keep your nose to the grindstone

努力工作并持续不断
Meaning
to work hard and continuously
Example
If you **keep your nose to the grindstone**, you’ll achieve your goals.
如果你**保持在磨石上工作**，你将实现你的目标。
idiom

know the ropes

对某事非常熟悉；对某事有透彻理解
Meaning
to be very familiar with something; to have a thorough understanding of something
Example
He really **knows the ropes** in this field of work.
他在这个工作领域真的**非常熟悉**
idiom

Keep your friends close and your enemies closer

保持与朋友的良好关系非常重要，但理解你的敌人也同样重要。
Meaning
It's important to maintain good relationships with your friends, but it's equally important to understand your enemies.
Example
He always watches his competitors carefully because he believes in **keeping your friends close and your enemies closer**.
他总是小心地观察竞争对手，因为他相信**保持朋友在身边，敌人更靠近**。
idiom

keep up with the times

保持更新或适应现代趋势
Meaning
to stay updated or adapt to modern trends
Example
In the fast-moving tech industry, companies must **keep up with the times**.
在快速发展的科技行业中，公司必须跟上时代的步伐。
idiom

knock it out of the park

做某事极其出色或成功
Meaning
to do something extremely well or successfully
Example
Her presentation **knocked it out of the park**.
她的演讲 **做得非常出色**。
idiom

keep out

防止某人或某物进入
Meaning
to prevent someone or something from entering
Example
Close the windows to **keep out** the dust during the renovation.
在翻新期间，关上窗户以防止灰尘进入。
phrasal-verb

keep up growth

随着时间推移保持经济增长
Meaning
to maintain economic progress over time
Example
The government is focusing on policies to **keep up growth** while maintaining stability.
政府正在专注于政策以保持增长，同时保持稳定。
phrasal-verb

kick oneself for

因为做或不做某事而感到愤怒或遗憾
Meaning
to feel angry or regretful for doing or not doing something
Example
I could **kick myself for** not taking that job opportunity.
我为没有抓住那个工作机会而懊悔。
idiom

keep your emotions in check

控制你的情绪
Meaning
to control your emotions
Example
It's important to **keep your emotions in check** during a meeting.
在会议期间保持控制你的情绪是很重要的。
idiom

keep one's word

做自己承诺做的事情
Meaning
to do what one has promised to do
Example
He always **keeps his word**, no matter what.
他总是遵守诺言，无论发生什么。
phrasal-verb

keep fit

保持健康和积极运动
Meaning
to stay healthy and physically active
Example
I go jogging every morning to **keep fit**.
我每天早上去慢跑来保持健康。
idiom

keep your word

遵守诺言或承诺
Meaning
to honor a promise or commitment
Example
You must always **keep your word** if you want to gain trust.
如果你想获得信任，你必须始终遵守诺言。
phrasal-verb

kick goals around

非正式地讨论可能的目标
Meaning
to discuss possible objectives informally
Example
We **kick goals around** during lunch before locking the roadmap.
我们在午餐时非正式地讨论可能的目标，然后锁定路线图。
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

Keep fighting the good fight

即使面临挑战，也要继续努力。
Meaning
Continue your efforts even when facing challenges.
Example
You may not see results yet, but **keep fighting the good fight**.
你可能还看不到结果，但**继续努力**。
idiom

keep someone’s word

做你承诺的事情
Meaning
to do what you promise to do
Example
You can trust him; he always **keeps his word**.
你可以信任他；他总是**信守承诺**。
phrasal-verb

keep striving

继续努力
Meaning
to continue trying hard to achieve something
Example
Even after success, a true professional keeps **striving** for excellence.
即使成功之后，真正的专业人士仍然在追求卓越。
idiom

knock your socks off

极大地打动或惊讶某人
Meaning
to impress or surprise someone greatly
Example
The concert will **knock your socks off**!
音乐会将 **让你大吃一惊**！
idiom

kick in

开始生效
Meaning
to begin to take effect
Example
The backup generator should **kick in** within seconds.
备份发电机应在几秒钟内**启动**。
idiom

knuckle down

开始努力工作，特别是在拖延之后
Meaning
to start working hard, especially after delaying
Example
It’s time to **knuckle down** and finish this report.
是时候**开始努力工作**并完成这份报告了。
phrasal-verb

keep under

控制或压制某事或某人
Meaning
to control or suppress something or someone
Example
The manager tried to **keep under** control the rising tension.
经理试图控制日益紧张的局势。
idiom

Keep the tradition alive

继续实践一个习俗，以免它被遗忘
Meaning
To continue practicing a custom so that it is not forgotten
Example
Every year we celebrate this festival to **keep the tradition alive**.
每年我们都会庆祝这个节日，以**保持传统活力**。
idiom

keep up with the Joneses

试图在财富或财产上与邻居或同龄人匹敌
Meaning
to try to match your neighbors or peers in wealth or possessions
Example
Many people go into debt trying to **keep up with the Joneses**.
许多人为了**keep up with the Joneses**而陷入债务。
idiom

Know the drill

熟悉某个例程或程序。
Meaning
To be familiar with a routine or procedure.
Example
Everyone here **knows the drill** during an emergency.
这里每个人都知道在紧急情况下该做什么。
idiom

keep your cool

在压力或挑衅下保持冷静
Meaning
to stay calm under stress or provocation
Example
Even in emergencies, he always **keeps his cool**.
即使在紧急情况下，他总是保持冷静。
phrasal-verb

keep in

不允许某人出去；保持在里面
Meaning
to not allow someone to go out; to hold inside
Example
The teacher **kept in** the students after class for talking too much.
老师因为学生说太多话而把学生留在教室里。
idiom

kind words cost nothing

善良不需要花费努力或金钱
Meaning
being kind doesn’t take effort or money
Example
Remember, **kind words cost nothing**.
记住，善良的话不花任何代价。
phrasal-verb

keep pushing forward

尽管面临挑战，依然朝着目标前进
Meaning
to continue moving toward your goals despite challenges
Example
Even when it’s tough, always **keep pushing forward**.
即使困难重重，也要永远**向前推进**。
idiom

keep something under wraps

将某事保密
Meaning
to keep something secret
Example
They managed to **keep the project under wraps** until the launch day.
他们成功地**将项目保密**直到发布日。
idiom

keep your eyes on the prize

尽管有困难，依然保持专注于目标
Meaning
to stay focused on your goal despite difficulties
Example
Even during tough times, she **kept her eyes on the prize**.
即使在困难时刻，她依然专注于自己的目标。
idiom

keep body and soul together

努力生存或幸存
Meaning
to manage to stay alive or survive
Example
He worked day and night just to **keep body and soul together**.
他日夜工作只是为了**活下来**。
idiom

keep tabs on

密切关注某人或某事
Meaning
to monitor someone or something closely
Example
I try to **keep tabs on** industry trends.
我尽量密切关注行业趋势。
idiom

Keep the team on track

确保团队保持专注和有组织
Meaning
to make sure the team remains focused and organized
Example
As the project manager, it's important to **keep the team on track**.
作为项目经理，确保 **保持团队在正轨上** 是非常重要的。
phrasal-verb

keep off

避免触摸或踩到某物; 避免谈论某事
Meaning
to avoid touching or stepping on something; to avoid talking about something
Example
Please **keep off** the grass.
请不要踩到草坪
idiom

keep an eye out

仔细观察某事或某人
Meaning
to watch for something or someone carefully
Example
Can you **keep an eye out** for my package while I'm away?
我不在的时候，你能**注意**我的包裹吗？
idiom

keep in mind

记住一些重要的事情
Meaning
to remember something important
Example
**Keep in mind** that deadlines are strict.
记住，最后期限是严格的。
idiom

Keep one’s eye on the ball

专注于实现目标。
Meaning
To stay focused on achieving a goal.
Example
If you **keep your eye on the ball**, you’ll surely succeed.
如果你专注于目标，你一定会成功。
idiom

Keep fighting

继续奋斗；不要放弃。
Meaning
Continue striving; don’t give up.
Example
No matter what happens, just **keep fighting**.
无论发生什么，都要继续奋斗。
idiom

know something by heart

把某事完全记住
Meaning
to memorize something perfectly
Example
She **knows all the poems by heart**.
她把所有的诗都背得滚瓜烂熟。
idiom

keep things in perspective

通过现实地看待事物保持冷静
Meaning
to stay calm by seeing things realistically
Example
When stressed, try to **keep things in perspective**.
当感到压力时，试着**保持事情的视角**。
phrasal-verb

keep striving for

继续为实现某事而努力
Meaning
to continue making great efforts toward achieving something
Example
He always tells his students to **keep striving for** excellence.
他总是告诉他的学生要**为卓越不断努力**。
phrasal-verb

keep improving

保持改善
Meaning
to continue making things better or more effective
Example
Our company culture encourages everyone to **keep improving**.
我们的公司文化鼓励每个人**保持改善**。
phrasal-verb

keep your head high

即使面对批评或失败，仍然保持自信和骄傲
Meaning
to stay confident and proud even after facing criticism or failure
Example
No matter what happens, always **keep your head high**.
无论发生什么，始终保持自信昂首。
idiom

keep things bottled up

不表达你的情感或担忧
Meaning
to not express your emotions or worries
Example
He tends to **keep things bottled up** instead of talking about them.
他倾向于**把事情闷在心里**，而不是谈论它们。
phrasal-verb

keep emotions in check

控制你的情绪，不让它们占据主导地位
Meaning
to control your emotions and not let them take over
Example
During negotiations, she managed to **keep her emotions in check**.
在谈判过程中，她成功地**保持了她的情绪控制**。
phrasal-verb

keep ahead

保持领先
Meaning
to remain in a leading or advantageous position
Example
The company invests in innovation to **keep ahead** of competitors.
公司在创新方面投资，以便保持领先于竞争对手。
idiom

kill time

在等待时做某事
Meaning
to do something while waiting
Example
We played cards to **kill time** before the show started.
我们玩牌来**打发时间**，直到节目开始。
phrasal-verb

keep up with changes

保持对新发展的了解或更新
Meaning
to stay informed or updated about new developments
Example
Employees must **keep up with changes** in company policies.
员工必须跟上公司政策的变化。
idiom

keep it under wraps

保密某事
Meaning
to keep something secret
Example
We’re trying to **keep it under wraps** until the official announcement.
我们正在努力保密，直到正式公告。
idiom

Know something inside out

非常熟悉某事
Meaning
To know something very well
Example
She **knows the syllabus inside out**.
她非常熟悉这门课程。
phrasal-verb

keep after

不断提醒或鼓励某人做某事
Meaning
to remind or encourage someone to do something continuously
Example
Parents often **keep after** their children to do homework.
父母常常提醒他们的孩子做家庭作业。
phrasal-verb

knock out

击败某人使其无法继续比赛
Meaning
to defeat someone so they can no longer compete
Example
They **knocked out** the defending champions in the semi-final.
他们在半决赛中击败了防守冠军。
phrasal-verb

keep from

防止自己或他人做某事
Meaning
to prevent oneself or someone from doing something
Example
I couldn’t **keep from** laughing when he told the joke.
我无法忍住笑，当他说笑话时。
phrasal-verb

keep down

防止增长或增长
Meaning
to prevent from increasing or growing
Example
We need to **keep down** our expenses this month.
我们需要在这个月**keep down**我们的开支。
idiom

keep track of

持续监控或记录信息
Meaning
to monitor or record information consistently
Example
Use the shared sheet to **keep track of** expenses.
使用共享表格来跟踪支出。
phrasal-verb

keep calm

保持冷静，不生气或不烦恼
Meaning
to stay relaxed and not get angry or upset
Example
He tried to **keep calm** when everyone else was panicking.
当其他人都在恐慌时，他尽力保持冷静。
idiom

keep one's head above water

在困难时期经济上生存
Meaning
to survive financially in difficult times
Example
Many small businesses struggle to **keep their heads above water**.
许多小企业挣扎着**保持生存**。
idiom

kill two birds with one stone

一箭双雕
Meaning
to succeed in achieving two things in a single action
Example
I can **kill two birds with one stone** by listening to a podcast while I exercise.
我可以 **一箭双雕**，一边听播客一边锻炼。
idiom

keep someone's secret

保守别人告诉你的秘密
Meaning
to not tell others what someone has told you in confidence
Example
You can trust me—I’ll **keep your secret**.
你可以相信我——我会保守你的秘密。
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

keep someone at arm’s length

与某人保持距离
Meaning
to avoid getting too close to someone
Example
After the argument, I **kept him at arm’s length**.
争吵之后，我与他保持距离。
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**。
phrasal-verb

keep faith in

尽管面临困难，仍然相信某事或某人
Meaning
to continue believing in something or someone despite difficulties
Example
Always **keep faith in** yourself, even when no one else does.
即使别人不相信，依然要相信自己。
phrasal-verb

keep at

继续做某事，决心坚定
Meaning
to continue doing something with determination
Example
If you **keep at** your practice, you’ll master it soon.
如果你继续练习，很快就能掌握它。
idiom

kick up your heels

通过跳舞或庆祝来享受自己
Meaning
to enjoy yourself by dancing or celebrating
Example
Everyone was ready to **kick up their heels** at the reunion.
每个人都准备在聚会上尽情享受。
phrasal-verb

keep inside

不向他人展示或告诉他们你的情感
Meaning
to not show or tell others about your emotions
Example
He tends to **keep** his feelings **inside** instead of talking about them.
他倾向于将自己的感受**保持在心里**，而不是谈论它们。
idiom

keep faith with someone

对某人或某事保持忠诚
Meaning
to remain loyal to someone or something
Example
Even in hard times, she **kept faith with** her friends.
即使在困难时期，她也保持了对朋友的忠诚。
idiom

keep in touch

与某人保持沟通
Meaning
to maintain communication with someone
Example
Even after moving away, we **keep in touch** regularly.
即使搬走了，我们仍然保持定期**联系**。
idiom

keep one's cards close to the chest

将计划或意图保密
Meaning
to keep one's plans or intentions secret
Example
During the negotiations, she **kept her cards close to the chest**.
在谈判期间，她**保持了自己的卡片靠近胸部**。
idiom

keep the ball rolling

保持活动或过程进行
Meaning
to keep an activity or process going
Example
Let’s **keep the ball rolling** on this project.
让我们继续进行这个项目。
phrasal-verb

keep cool

保持冷静
Meaning
to remain calm in a stressful situation
Example
It’s important to **keep cool** even when things go wrong.
即使事情出错，也要**保持冷静**。
phrasal-verb

key up

使某人感到紧张或兴奋
Meaning
to make someone feel nervous or excited
Example
She was **keyed up** before her first performance.
她在第一次表演前感到非常兴奋。
idiom

Keep going strong

坚持不懈，不放弃
Meaning
to keep persevering and not give up
Example
Even when times are tough, remember to **keep going strong**.
即使在困难的时候，也要记得 **坚持不懈地前进**。
idiom

kill someone with kindness

以额外的友善对待一个不愉快的人，以中和他们的负面情绪
Meaning
to be extra kind to someone unpleasant to neutralize their negativity
Example
The best way to deal with her is to **kill her with kindness**.
与她打交道的最佳方式是以**友善的态度对待她**。
idiom

Keep a cool head

保持冷静，不要过于情绪化
Meaning
to remain calm and not get too emotional
Example
In a crisis, it's important to **keep a cool head**.
在危机中，保持冷静非常重要。
phrasal-verb

keep up on

保持与在线工作或沟通保持更新
Meaning
to stay updated with online work or communication
Example
She always **keeps up on** company news through Slack.
她总是通过Slack保持对公司新闻的更新。
idiom

Keep hope alive

继续相信一个积极的结果。
Meaning
To continue believing in a positive outcome.
Example
Even in hard times, we must **keep hope alive**.
即使在困难时刻，我们也必须**保持希望活着**。
idiom

kindred spirit

有相似兴趣或感情的人
Meaning
someone who has similar interests or feelings
Example
We became friends because we’re **kindred spirits**.
我们成为朋友是因为我们是志同道合的人。
idiom

keep all your eggs in one basket

依赖于单一的计划或成功的来源
Meaning
to rely on a single plan or source of success
Example
Don’t **keep all your eggs in one basket** when investing.
投资时不要把所有的鸡蛋放在一个篮子里。
phrasal-verb

kick start

快速有效地开始某事
Meaning
to start something quickly and effectively
Example
The new project aims to **kick start** rural economic growth.
新项目旨在快速启动农村经济增长。
idiom

keep your options open

推迟做出最终决定，以便保留选择
Meaning
to delay making a final decision so you have choices
Example
I’ll **keep my options open** until I hear back from all the universities.
我会**保持我的选择开放**，直到我收到所有大学的回复。
idiom

keep smiling

即使面对困难也保持愉快
Meaning
to stay cheerful even when facing difficulties
Example
Whatever happens, just **keep smiling**.
无论发生什么，保持微笑。
phrasal-verb

knuckle under

接受某人的权威或屈服于压力
Meaning
to accept someone’s authority or give in to pressure
Example
He refused to **knuckle under** to his boss’s unfair demands.
他拒绝屈服于老板的不公平要求。
idiom

keep a stiff upper lip

在困难的情况下不表现出情绪
Meaning
to not show your emotions in difficult situations
Example
Even after losing the match, the team **kept a stiff upper lip**.
即使输掉比赛，团队仍保持镇定。
phrasal-verb

knock down

击打某人或某物并使其摔倒在地
Meaning
to hit someone or something and cause them to fall to the ground
Example
The car **knocked down** a cyclist on the busy road.
那辆车在繁忙的道路上撞倒了一名骑自行车的人
idiom

kiss and make up

吵架后重新和好
Meaning
to become friends again after an argument
Example
They always **kiss and make up** after every fight.
他们每次吵架后都会和好。
phrasal-verb

kick off with

用某些特定的事物开始一项活动或事件
Meaning
to begin an event or activity with something specific
Example
The festival will **kick off with** a traditional dance performance.
节日将以传统舞蹈表演拉开序幕。
idiom

keep a straight face

在有趣的情况下避免笑出声
Meaning
to avoid laughing in a funny situation
Example
It was hard to **keep a straight face** during his silly speech.
在他愚蠢的演讲过程中，很难保持严肃的表情。