求翻译：湄公河,干流全长4880公里，是亚洲最重要的跨国水系，世界第六大河流；主源为扎曲，发源于中国青海省玉树藏族自治州。流经中国、老挝、缅甸、泰国、柬埔寨和越南，于越南胡志明市流入南海。湄公河上游在中国境内，称为澜沧江，下游三角洲在越南境内，因由越南流出南海有9个出海口，故越南称之为九龙江，总程度长2139公里。是什么意思？

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mekong river, stream 4880 km length, one of Asia's most important transnational river systems, the world's No. 6 big rivers; the main source of Mazar-i-tunes, originated in China Yushu Tibetan Autonomous Prefecture, Qinghai Province. Passing through China, Laos, Myanmar, Thailand, Cambodia and Viet

Mekong River, the main current span 4880 kilometers, are the Asian most important transnational river system, the world sixth big rivers; The main source for grips the tune, originates in the Chinese Qinghai Province eucalyptus Tibetan national minority autonomous prefecture.Flows after China, Laos,

The Mekong River, the main stream of 4,880 km, is the most important transnational water systems in Asia, the world's sixth largest river; the source song for ligation, rises in the yushu Tibetan Autonomous Prefecture in Qinghai province, China. Flowing through China, Lao, Myanmar Thailand, Cambodia

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