You must mind your p's and q's when you get there.

你到了那儿遇事要小心点.

《简明英汉词典》

You'll have to mind your p's and q's with them; they are very formal people.

他们那些人都很拘谨, 你同他们打交道一定得小心谨慎.

《简明英汉词典》

The children were told to mind their P's and Q's.

孩子们被嘱应小心谨慎.

辞典例句

If you wish your success, you must mind your p's and q's.

如果你想取得成功, 就必须脚踏实地,仔细做好每一件事.

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The supervisor is all right as long as you watch your p's and q's.

只要你能谨言慎行,主管还是很好相处的.

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