Would you like me to drop this parcel off at the post office?
a. Yes,l will drop her off at the bus stop.
b. Thanks a lot.That'll save me a lot of trouble.
答案是b, 解答说两个drop off 的用法是不同的一个是 邮寄 一个是 让...下来
网络上drop sth/sb off at 只查的到 将...带到某地 这个用法@@
可以解释一下用法差异嘛？谢谢