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?2?????????13?????????????? (???????? ????????????????????????????)?(?)????????????13??????,±800??????,???????

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2??12???????,????????,??????????????????????????±800???????????????? ??????????????????????????????

±800???????,??????2020????????????????????????????????6???????????????30?,????5?,???700????

?±200?±400?±600?±800??????????????????,???????6???????????????????????????????1??????????????????????????1??±200???????????????????????????????

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??????????,???,?????????????????2000???????????????????,??

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