Definition
To be careful about one's behavior in order to avoid getting into trouble.
註意自己的行為，以免惹上麻烦。
He'll have to watch his step if he wants to keep that job of his!
如果他想保住那份工作，就必須小心行事！
You need to watch your step during this sensitive period.
在這個敏感時期，你需要謹慎行事。
After his promotion, he knew he had to watch his step more carefully.
升職後，他知道自己必須更加小心行事。