?? ???????????? ????????????
????:1???????:???????
2????????
3????????????
4???????
5???app??
????????6????????????13?? (???????????????????????????????????)13?,?????????????,6??12?????,??????????????????,??????????????,?????
????,????????????????????,??????????????????????????
???,?????,?????????????,???????????????,???????????????????,??????
??????????,????????????????????,????
?????????????,?????,????????????(????????) ??:???