Arid lands, surprisingly, contain some of the world's largest river systems, such as the Murray-Darling in Australia, the Rio Grande in North America, the Indus in Asia, and the Nile in Africa.

令人惊讶的是，干旱地区拥有着世界上最大的一些河流系统，如澳大利亚的墨累-达令河、北美的里奥格兰德河、亚洲的印度河和非洲的尼罗河。

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The rivers that water some of the world's breadbaskets, such as the Colorado, Murray-Darling and Indus, no longer reach the sea.

一些流域是主要的粮食产地，如科罗拉多河，墨累达令和印度河，这些河已经流不到大海了。

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In arid places the same physics amplify evaporation and drought, visible in the dust-dry farms of the Murray-Darling River Basin in Australia.

而在一些干旱地区这个物理规律却使得水分蒸发更快、干旱情况更加严重，我们可以从澳洲的莫瑞达令河流域农业旱情严重发现这一情况。

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More than four-fifths of the river water taken from the Murray-Darling basin is used for agriculture.

ECONOMIST: Australia's water war

In 2007, however, the Howard government passed an act that allowed it to muscle in on water management in the Murray-Darling basin, constitutionally a state responsibility.

ECONOMIST: So long as it doesn��t cost too much

In an effort to tackle the drought which was parching the rivers and their adjacent wetlands, it took control of the basin's water from the states and gave it to the newly established Murray-Darling Basin Authority.

ECONOMIST: Australia's water war