Look out for symptoms of depression.

　　留心看有無抑郁癥狀。

　　'Look out!' he shrieked.

　　“小心！”他尖叫道。

　　‘ Look out! ’ I hollered.

　　“當心！”我大喊一聲。

　　I should look out if I were you!

　　如果我是你，我會小心的。

　　I'm just trying to look out for you

　　我只是想要為你著想。