?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??

?,???,??????????????????????????,??

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

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