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简介：EdwardNortonnarratesthisstunninglybeautifulfilm,whichdocumentsanimportantenvironmentalwhitewaterexpeditiondownthreeepicriversintheChineseHimalaya,theupperYangtze,MekongandSalween;whiletellingthestoryoftheNatureConservancy'seffortstoprotectoneofthemostbio-diverseandculturallydiverseregionsintheworld.…