You must act up to your promise.
你必须实践自己的诺言。
You must act up to your promise.
你必须履行自己的诺言。
The car's engine began to act up.
汽车的发动机开始出毛病了。
Please act up the dialogue in pairs .
请两人一组表演这个对话。
按你的信念办。
The car's engine is beginning to act up.
这辆车的引擎开始出毛病了。
The car 'engine is beginning to act up .
汽车引擎开始出毛病了。
But you didn't act up to your principle.
但你并没有按你的原则办。
Don't act up or you will be spoiled some day.
不要卖弄，否则有一天你会吃大亏。
Continually heavy rain made some rivers act up.
连续不断的大雨造成一些河流泛滥。
Watch Ricky.He sometimes likes to act up in class.
注意里基，他有时喜欢在课堂上捣乱。
Sometimes they act up and force you to take a stand.
有时因为他们无理取闹或者强迫你表明立场。
What you say means very little unless you act up to it.
你要是说而不做，你的话就没有多大意思了。
"Look," he said to Cass, "you act up again and you're out."
“听着，”他跟卡丝说，“你再胡闹就出去。”
If the pressure is too low, the heating system will act up.
如果压力太低，供暖系统就会出毛病。
They create, notice, and act upon chance opportunities that come up.
他们创造机会、关注机会，并在机遇来临时行动。
If the pressure is too low, the central heating system will act up.
如果压力太低，集中供暖系统就会出毛病。
The children started to act up as soon as the teacher left the room.
老师一离开教室，孩子们就闹起来了。
If you act up to your promise, we are going on cooperating with you.
如果你遵守你的诺言，我们将继续同你合作。
The bird said, I'm sorry for my behaviour and will never act up again.
小鸟说：“我很抱歉我的行为，我将不再这样做了。”
Narration is a basic speech act up on which people tell and retell their experience.
叙事是人类最基本的一种言语活动，是人们借以组织和重述人生经验的主要模式。
The nation's advertisers need to clean up their act.
该国的广告商们需要检点他们的行为。
Ken was in the act of paying his bill when Neil came up behind him.
当尼尔走到他身后时，肯正在付账单。
He cleaned up his act and came off drugs.
他已改邪归正戒掉了毒品。
哑剧表演是怎么回事？
这个人已经改邪归正了。
Moose was ordered to "clean up his act."
穆斯被命令“改过自新”。
Moose was ordered to "clean up his act."
穆斯被命令“改过自新”。
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