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2??????????
3???????????
4????app??????
5?????500???????
?9????????????21? ??,??,??????????????,????????
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21??????????????????22????,??????????4-8?,?8-10?????????4-5?,?6-8?????,?????8-9??????,21???????,???????????????????????????????????????????????????????????????????6-7?,????????????8-9????,??????8-9?,??10-11?????
??????????????(9??21?08???????-22?08????) ????????:??????????
?,21????25????,?????????????????????????????,?,?????????????(100~190?????????)?
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9??21??08???22??08???,?????????????????????????????????????????,??????????????,??????????????????????????????????????????4~6??????
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