????:1??????????:????

2??????

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21???????,???????????????????????????????????????,????,??????????,?????21????????????

9????24?28????,????21????????????????????,??,????????????15????,??????????

???????????,?????10????????????,??????????????2.3???,??????????????????????????????????

?8??????????,????????????????????????????2441.3???????????????????,?????????????21.8%,?????????52.6%,??

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