?? ???????????:???77???
![](https://image.chezhanri.com/2019/1202/41854fa3bf7d3a171086f9f22f247cec.jpg)
????:1??????:?????
2??????
3???????????
4???app???
5?????vx
???????????6????21????? (?????????????????? ?????)????????????????????21??
????????????????????????????????:??????????????,20??????77??????60???????,???????????????????????77??????
???:77????????????????????????????????????,???,???
????77?????????????????,?????????????“77?????”?????,??77?????????????,???,????????????????????????????,“77????????”???????????????????????????????????,?????????????,????
????????????????“????”?????,???????????????70?,??????????????????????,??????,?????????????,??????????????????,???(???) ?????????:????????????????