1、训斥
... drop in顺便来访，非正式访问 drop on训斥，惩罚 drop off入睡;(让…)下车，把…放下;下降，减少 ...
2、惩罚
... drop off睡着;(让…)下车 drop on训斥,惩罚 drop out退出,退学;掉落 ...
3、落在
... descend on；drop on； befall落在；落到…身上 attack；go and fight with进攻；袭击 come to pass on or occur on（a certain day）适逢 ...
drop in on顺道拜访;顺便拜访;非正式访问;拜访
drop in on susan顺道拜访
drop bomb on宣布坏消息
Vertical Drop Heroes on我是消防员
drop diva on death美女上错身
drop test on reliability可靠性跌落试验
drop in on detail顺道拜访
drop in on sb拜访某人;顺便拜访某人
drop in on soebod拜访某人