???????????????????2????????16???????????????????? ????,???????,??????????????????????????????????????

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

??,????????????????????,?????,???????,??????«????????????»«??????»????????????????????,???????????????;????;???????????,????

???????:??? ??“??app_????”

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

????:1???app_????:?????????

2?????400??

3???????100?????

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

5?????

???????????????????2????????16???????????????????? ????,???????,??????????????????????????????????????

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

??,????????????????????,?????,???????,??????«????????????»«??????»????????????????????,???????????????;????;???????????,????

???????:???