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????:1????????????:??????
2??????????
3?????520
4??????????
5???????
????2?21?? (??????????????????? ???????? ????)??,??????????????-??(?????????????�??�)???
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??21????????????????????????,??????????????????????????????,?????,?,??????????????????????????2???????20??????????????????,??200????????????,???????800???????,????900???????????????????
�?????????????????15??????????!???,??????????20%,???30%?�?,????????????3?????????125??????????
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???,??1838??,??22155????????????�??????�???????????????�????????????????�????????
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?,??,???????????????????????,????????????????,????,??????????????????????????????????????????100??,?6000??,??7000?????????(????????????????)
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