Teenagers should be cautious about the content on social networking sites, for their tastes and preferences are shaped by what they see in the media.

青少年应该谨慎对待社交网站上的内容，因为他们的品味和喜好总是受到他们在媒体上看到的东西的影响。

He warns netizens to be cautious about online wills.

他提醒网民们要对网上遗嘱多加谨慎。

You must be cautious about accepting invitations.

你要谨慎接受邀请。

If so, politicians should be cautious about handing out tax breaks.

如果情况确为如此，政客们就应该小心谨慎地对待发放税务减免的提议。

The parties involved should be cautious about moving towards sanctions.

各方在制裁问题上要十分谨慎。