PHRASAL VERB 小心，提防(不愉快的事情或陷入困境) If you tell someone to watch out, you are warning them to be careful, because something unpleasant might happen to them or they might get into difficulties. 小心，提防(不愉快的事情或陷入困境)
You have to watch out because there are land mines all over the place. [VERBPREP.]
你必须小心，这里到处是地雷。
The casinos in Las Vegas had better watch out since I'm obviously on a lucky streak! [VERBPREP.]