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

????:1????????:????????
2?????????
3???????app???
4?????
5?????????????
?2??????????????20? (?????? ??)??????20??(???)??????,??,??????

???58?????????????????????????????????????????????????,???2??????11??“??????????+??????”???????????,??????????????????????????????????????,??20???,????????????????????
?,???11?2?????13????
2?8?11?50??????????????,?????????????????????????2????9??,?,????????????
????2???????????????????17?12?????????????????????????????,??2????????????10???19??,10?????????,100???????(?)
??:???????