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???????????2????7?? ??:?????,????????????????,?????????6?????????????

???,??????6????,???1?26?????????????????????,?????????????????????????????????6000????,5????,?5.2????,?????????????????????6???,????7?????????4.0?????????????????????????

??????????,??????????????,????????????????????????????????6?,?????3??????????3???????????????????

???????,???20000?????,???????????????340????????,?????????????11000??,???

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