On a windy day, he measured how far he could jump with the wind at his back.

在一个刮风的日子里，他测量了自己在风吹着的情况下能跳多远。

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So on a windy day, the cheapest power comes from wind turbines.

因此在多风的日子，最便宜的电力来自风力涡轮。

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Wind farms have tens and sometimes hundreds of these turbines lined up together in particularly windy spots, like along a ridge.

风电场把数十个有时是数百个这样的发电机一起排列在风口上，例如沿着山脊。

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Even less windy states can achieve similar results, Kelley adds, thanks to low-wind and community-scale turbines.

FORBES: U.S. Wind Industry Drifts South