Be careful about what you say.

要当心你说的话.

《简明英汉词典》

Sick people should be careful about their diet.

病人对饮食要多加检点.

《现代汉英综合大词典》

People should be careful about their possessions and not leave them lying around.

人们应该小心自己的财物，不要随便乱放。

柯林斯例句

I think you should be careful about talking of the rebels as heroes.

我觉得你说话应该小心，不能把反叛分子当英雄。

柯林斯例句

He really must be careful about thinking aloud. Who knew what he might say?

他的确该注意自己说话不经思索的问题。谁知道他会说些什么？

柯林斯例句

It is important, I think, for everyone to be careful about claiming victory.

我想，每个人宣布胜利时都应该慎重。

柯林斯例句

In my position I have to be careful about getting involved in anything of that sort.

处于这位置,我得小心不要卷入那种事.

《简明英汉词典》

Be careful about the precision of detail in your descriptions.

在你的描述中,必须认真地考虑细节的精确度.

About Face 3交互设计精髓

Be careful ( about / in ) crossing the road.

过马路要 留神.

辞典例句

" One thing you want to be careful about, and that is to start easy.

“ 有一件事你要当心, 那就是起动时要平稳.

英汉文学 - 嘉莉妹妹

Meaning, we should be careful about accepting conventional as, well, being wise.

就是说, 我们要谨慎, 既不要轻易接受俗套的看法, 又不要太自作聪明.

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Be careful about word, because it can become your action.

小心你的所想, 因为这会成为你的言辞.

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Please tell the porter to be careful about my suitcase.

请让行李员小心搬运我的箱子.

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Choosing a soft compound here you have to be careful about graining.

在这里选择软轮胎你必须注意粒化.

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Workers working on the drilling platform should be careful about storms.

在钻井平台上工作的工人要注意暴风雨的袭击.

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