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Asweallknow,treesareimportanttoourlife.Theyprovideuswit...
问题详情:Asweallknow,treesareimportanttoourlife.Theyprovideuswithfood,woodandmostimportantly,oxygen.Nowthereisonemorethingwecanaddtothislist—blockingoutharmfulbacteriainwater.Thediscoverywasmadebysome...