drop off 什么意思?
问题描述：
drop off 什么意思?
答
1.落下
The handle of the door has dropped off.门把手脱落了.
2.不知不觉入睡
The old man has dropped off by the fire.这个老人在炉火旁边睡着了.
3.送下车; 送到
4.减少