look out

look out 留神，当心

【例句】

◆  Look out! There's a car coming．当心！有辆汽车来了。

注意 look out for sb．／sth.表示”当心或提防某人（某事）”。如：Look out for pickpockets．小心扒手。 Do look out for spelling mistakes when you check your homework．检查家庭作业时一定要当心拼写错误。