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

2?????????

3??????????

4?????600??

5?????????

??????????2???????????????????????????12??????? 2?????????12??????????,??

???????,??????50????????????,??????????????,??????????,???,????????????????,????????????????????????????????????,???????????????????????????????????,?????,??????,?????????????????????????,?,???????

?,????50??,????????????,??????????????????????????????,??,?????????,??????????????????????,???????????????

???????????(?) ??????????:???????