?? ???? ?????“???????????”
![](https://image.chezhanri.com/2020/0708/0349f14b3495c6069f1df1bd989ada19.jpg)
????:1?????????:??app??
2???51??????
3??????????
4??????????????
5?????????
????????????,???,??????????????“????”,??????????
???,????,??????????????????????????,???????????????????POS??????????
????????????,????????????????????POS???????????????????????
?,???????????,??,?????????????
????,??????????????POS??????????????,?????
????? ??????? ?????????? ???
?:??????