2??14?????,?????????3????,???????????13?????????????????????????????32???????????53????

??????????????????????,????????,??????????????????,??????????????

???????????,??50???,???,???????2.5???????????????5?,?????????????

????????,???,??????????????????????????????

(??????? ??? ? ????)

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

??“???????”

?? ????????????????????50?

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

2???????????

3???????

4?????????

5???????

2??14?????,?????????3????,???????????13?????????????????????????????32???????????53????

??????????????????????,????????,??????????????????,??????????????

???????????,??50???,???,???????2.5???????????????5?,?????????????

????????,???,??????????????????????????????

(??????? ??? ? ????)

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