what's the pick up date 交货期是何时?
pick up 是捡起来的意思,这里引申为交货,买方把货物“捡"起来.
what's the drive off date 装运期是何时?
drive off 是驱散的意思,这里引申为 卖方把货“驱散”走,就是装好运走.