These are the most common IDIOMS with UP and DOWN used in English:

以下是英语中最常用的含有up和down俚语：

UP

关于up的俚语

act up = to misbehave

行为不当

My son used to act up every day when he was little.

我儿子小的时候，每天都要调皮捣蛋。

bottle up = stay hidden

避而不谈

He would rather bottle up rather than solve the problems at work.

他宁愿避而不谈也不愿解决工作中的问题。

break up = end a relationship

分手

Jessica just broke up with her boyfriend.

杰西卡刚和男朋友分手。

back up = to copy something as a security measure

安全备份

My computer crashes three times this week, so I need to back up all my data now.

这周我的电脑死机三次，所以我现在需要备份所有数据。

blow up = to get angry very fast

发脾气

Mr. Moore blows up almost every class because Jack is always late.

因为杰克总是迟到，摩尔先生几乎把每节课都搞砸了。

brighten up = to make cheerful, happy

使高兴；使高兴

My sister tried to brighten up my day when I was feeling said.

当我感觉有人说的时候，我姐姐试图让我的一天变得愉快。

butter up = to flatter

奉承

She always butters up her boss when the new job position is available.

当新的工作职位空缺时，她总是奉承她的老板。

catch up = to share news with someone

跟某人分享新闻

I haven’t seen him for such a long time, and it was great to catch up.

我好久没见他了，能赶上他真是太好了。

chat up = to have a light, friendly conversation

聊天=轻松友好的交谈

She went to that bar only because she liked chatting up with the handsome bartender.

她去那家酒吧只是因为她喜欢和英俊的酒保聊天。

come up with = think of something, a plan or an idea

想出某物、计划或想法

We have to come up with a plan!

我们必须想出一个计划！

cover up = to hide, conceal

遮掩

Even in court, he still tried to cover up everything that he did.

即使在法庭上，他仍然试图掩盖他所做的一切。

doll up = to dress formally, to dress for a special occasion

打扮

My mom needs to doll up before her birthday party.

我妈妈需要在生日聚会前打扮一下。

dress up = to have very nice clothes on

穿上漂亮的衣服

Alicia always liked to dress up for her dates.

艾丽西娅总是喜欢盛装赴约。

eat up = to believe immediately

立刻相信

He ate up everything that his psychologist told him.

他相信心理学家告诉他的一切。

end up – to turn out, conclude

最后——结果是，得出结论

He ended up working at his father’s company.

他最后在他父亲的公司工作。

fix up = to make right, adjust

纠正

Melissa fixed up her dress before going out.

梅丽莎出门前把衣服整理好。

give up = surrender, admit failure

放弃=投降，承认失败

I will never give up.

我永远不会放弃。

head up = to lead, to take charge

领导，负责

You have to head up all the meetings today.

你今天必须主持所有的会议。

DOWN

关于down的俚语

back down = to take a less aggressive position

采取不那么激进的立场

I was about to win the argument, but I had to back down.

我本来想赢得这场争论，但我不得不放弃。

break down = to become unstable due to stress

因压力而变得不适

She broke down today at work, so she took a day off.

她今天上班时身体不适，所以请了一天假。

calm down = to become less excited

冷静下来

Please, calm down before you hurt somebody.

请在你伤害别人之前冷静下来。

clamp down on = to end something

结束某事

dumb down = to convey something in simple words

用简单的语言表达某物

She couldn’t understand the teacher, so he had to dumb down the explanation for her.

她听不懂老师的话，所以他只好把解释给她听。

jot down = to make a note

记下

Can you jot down the main ideas from the meeting, please?

请你把会议的主要想法记下来好吗？

keep down = to stay quiet

保持安静

Jack, can you keep it down, we are trying to sleep?

杰克，你能不能小声点，我们在睡觉？

man down = to lose courage

失去勇气

settle down = to establish a lifestyle, to marry

安定下来

Julie and Jack finally settled down.

朱莉和杰克终于安顿下来了。

（来源：沪江英语）