Wind farms, which generate electricity using arrays of thousands of wind-powered turbines, require vast expanses of open land.

风力发电场使用数千个风力涡轮机阵列发电，这需要大片开阔的土地。

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The biggest wind turbines generate enough electricity to supply about 600 U.S. homes.

最大的风电涡轮机产生的电能足够600个美国家庭使用。

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Wind turbines and solar cells will generate electricity and a rainwater collection system will harvest and purify rain.

风力发电机和太阳能电池可以产生电能，雨水收集系统能够收集并净化雨水。

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"Developers obviously go for the places where there is more wind and they can generate more electricity, " he said.

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Even under optimum conditions, it takes anywhere from 300 to 600 square miles of wind turbines to generate as much electricity as a single conventional power plant.

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They generate electricity from coal and wind, but their largest source is natural gas.

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