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

2??????V

3?????app

4???????????

5???????????

?????????2??????11??? (???????????? ???????????????? ????????????)?????????11??????????????

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

?????????????????????????????:2???10???,???“????”??????????,?????????????????,?????,?????,???????????????

?????:????????????????????????????,???????????,????????,???????????

????????????????,???????????,????«?????????????»?,????????????,????????????????,???,??????????,????,??????????,?30%?,??????

?????????????,??????????????????,??????????????,????????,???,?????????(????????)

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