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??????2???????7??? ???:?,???????,??????????6??????
?????,?????????????????????6??,????????????????????1?26?????????,??????????????????6000????????????????,5?,?????5.2???????????????,???????????6????????????????????????,?????????????7?4.0???
????????????,??????????????,????????????????????????????????????6???,??????3??3??????
??,?????????????????20000??,????????????????340??????,?11000??,??????????????
???,???????,????????????????????????????????,???6??????????(??????????) ?????:?????
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