The Aswan Dam for example stopped the Nile flooding but deprived Egypt of the fertile silt that floods left--all in return for a

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问题     The Aswan Dam for example stopped the Nile flooding but deprived Egypt of the fertile silt that floods left--all in return for a giant reservoir of disease which is now so full of silt that it barely generates electricity.

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答案 以阿斯旺大坝为例,它挡住了尼罗河的洪水,但也使埃及失去了洪水冲积的肥沃土壤,换回来的却是一个病态的大水库。现在水库积满泥沙,几乎不能用于发电了。

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