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分类：自然
集数：3集
导演：
展开全部
简介：世界有三大河流在中国，分别是长江、黄河和澜沧江。在1978年，科学家发现卡日曲可能要超过传统上认定的黄河正源头玛曲的长度，因此黄河的源头可能会改变。经过科学家测量，最终发现卡日曲水流量比玛曲充沛。收起
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