動詞 doze off:

1. change from a waking to a sleeping state
   同義詞：fall asleep, dope off, flake out, drift off, nod off, drop off, drowse off

1. He dozed off during the long lecture.
   他在聽那個冗長的演講時打起瞌睡來了。
2. That proved to be my undoing, for I soon got back to my old bad habit of dozing off in front of the screen.
   這證明了我的失敗，因為我不久就回到電視屏幕前打瞌睡的壞習慣去了。