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

2??????????

3????????

4???app???

5?????

??????????????,?????????,“??????????????”????????????

?????,????????????“?????????”????,???????,??????????????????????????????????????????????,???

?????????,??,????????????????“??,??????????????????????????”??,??????

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

??,????????????????????,????,?????????“?????????”,????????

????,??????????????,??“?????”??“?”??????????????????????450???????500????,??350??????

??,“????”?????????“??” ?

????,??????????????????????,????,??????“???????????????????”??????????????????3.8????????????,?????????????,?????????????????,?????????

“???,??50%??????????27%?????????????????,?????????20%???????????????????”??,??,??????,????????????????????????????????????,????“?????????????”

????,?“??”????????

??????,??????????,????????????????;

??????????????????????????????,?????????,?????????????????;

????,???????????????,????“?????”????????????,??;

?????????????,??,????????????……

“??????????????,?????????????????,?????????????????”????????????,??????8??????????????,?????????,???????????????????,???“???”?????

??????????,????????,???????????,???????????,????????,????,????????????????????,??????“?”,?????“??”????(??? ???? ??????????????) ????????????????:????