Har Nuur, like other lakes in the region, is a closed-basin lake fed by precipitation.

哈尔湖与本地区的其它湖泊一样，是封闭的一个靠降水给养的盆地湖泊。

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The forest is fed by the Amazon river, the largest river in the world by volume, which also has the biggest drainage basin on the planet.

亚马逊河蜿蜒纵横，作为世界上流量最大的河流，造就了地球上最大的流域。

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Irrigated rice-farming, which is two or three times more productive than the rain-fed sort, is growing rapidly throughout the basin, albeit from a low base.

ECONOMIST: The Mekong river