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1??31????????????????2?2?,????????????????????????????????,???????????????????????????????????,????2~4??????,?6????,???,???

2??2??????????????3???????????????,??,????4~6?,?????????????????????????6~8?,?4~5??,?????????????????????7~8?????????????6~8??????????????????????????9????????????,?????,?????????????????,???????5~7????8~10????,??11???

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1????31??08?2????1????????????08??,???????????????????????????????????????,??????,??????????????????????????????(10~15?)?????????????????????????????????????????,???(25~30???????)??????????????5~7?????8~10?????????????????????11??

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