????:1???????????:????????

2???????

3???????app

4?????????

5?????

????????6???19?? ??,??????????,???????????????18??,??????????????????????????????????????????????????,??????????,?????????????????????,???,?????????????????

?????????????,??????,???????????????????????8500??,???

?,???????6?????????????????????????,????1.3????????????,???142???3600?????,12??,????????????3700??????????? ??????????:?????????????????