watch one's step   (TTS發音)

1. be careful not to make an error 小心；謹慎行事；留意不犯錯

    Watch your step，young man！If you're late for work again you will lose your job. 當心，年輕人！如果你上班再遲到，你就會丟了工作。

2. be careful not to fall or stumble 小心走路；留意不要跌倒或摔跤

    Watch your step；the roads are icy. 當心不要摔跤，路很滑。