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?2?17??? (??????????? ?)??17???????,?????????????,2????????13?????????????????16???????,?????????,???72???15.3?,?;??????????????????10??????????48?6.5?~10.9???,?????????????;?????????????????4????????????
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??2???????????18???2????????????????????22????????,?????????,????,???2????????????19??2??20?,???,?????????,???????,????????????????,?????(?)
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