??6??????17????????? ???????????????????,????????6????17?18??????

?????6????18?????,???????????????????????????????????????????????35~36?????,?,??????????????????????????????37~39?,????40?????????????

??:?? ??:??? ??“??????app”????

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

????:1???????app:????

2??????600???

3?????????app

4???????

5????????

??6??????17????????? ???????????????????,????????6????17?18??????

?????6????18?????,???????????????????????????????????????????????35~36?????,?,??????????????????????????????37~39?,????40?????????????

??:?? ??:???