电视采访者必须小心别得罪人。

A TV interviewer must be careful not to offend.

《牛津词典》

我必须小心，不要患上咽喉炎而哑了嗓子。

I had to be careful not to get a sore throat and lose my voice.

《柯林斯英汉双解大词典》

有些植物有毒，必须小心对待。

Some plants are poisonous and should be handled with care.

youdao

You handle them very special in terms of being extra careful in a very high ventilation area, in hoods is how you handle them.

在使用它们的时候你需要格外小心,必须在通风条件非常好的地方，在通风柜中才行。

麻省理工公开课 - 化学原理课程节选

but you've got to be certain when you get out there. And make a positive move.

但是你在外面，你必须要小心。然后积极行动。

我使用自行车 - SpeakingMax英语口语达人

That's why it's all in French, because it's not copyrighted, and we have to be careful with that in here with these camera rolling--cameras rolling.

都是法文,因为没有相关版权,而且我们必须得特别小心,何况我们还在录像

耶鲁公开课 - 聆听音乐课程节选