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

2??????????

3????app

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

5??????????

?????????6???????????????????????18??(????????????????????????? ??????????)??????????????????18????,????????????,????

??????????

6?????25???????????????,??????“??”????,????,????????????????????????“???????????????????????”????5?????????????4????“?????”?????

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

????????????????????,????????,?????????????1600??,?????????4???????10????????????22.5?,??

?????770????????????????????????,????????????1???????10????1????????22.5??????????????????6?,?????????????,????50????

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

?????????????????????????????????????????,??????????,?,????????,????????????????,??????2000??????????8??

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

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