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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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