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????:???????:???????????

?????????6????29??? ????,????6?29?????10?????:6??28??8?29?????????????8?,???????????????????????????????????????,????????????????????????(250~322?),??30~72????????????????

?????,6???????29????14??30??14?,???????????????????????????????????????????????????????,?,??????????????????????????????????,??????????????????????(250~280?)??(?????20~50?????,????70?????),??????????

??:?????????

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1???;

2?????,????????????????????????????(???????????????????);

3?????????????????????

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