The scouts are watching out for enemy patrols.

侦察员提防着敌人的巡逻队。

He always kept a beady eye on his employees.

他总是瞪着精亮如珠的眼睛提防着他的雇员。

The explorer was ever awake for the dangers that surrounded him.

这个探险家时提防着周围的危险。