?????9??????????????4?? ???,????9????4??,????,??????????

??????????:??

?,???,?????????????????3.8??????????????

«?»???????????,?????????????,?1.28????,????????4000???????????????

???????????:??????????? ??“???app??????”

?? ????????????? ??????

????:1????app??????:?????v

2??????????

3????????

4???????

5???????

?????9??????????????4?? ???,????9????4??,????,??????????

??????????:??

?,???,?????????????????3.8??????????????

«?»???????????,?????????????,?1.28????,????????4000???????????????

???????????:???????????