You must watch your step so as not to fall down.

你必须留心脚下才不会跌下去。

youdao

So I want you to be on your guard and watch your step from now on.

因此，我要你注意检点自己，从此以后，步步当心。

youdao

So I want you to be on your guard and watch your step from now on.

因此，我要你注意检点自己，从此以后，步步当心。

youdao