Looking up, looking down, measuring the distance, figuring just the right wind direction and speed.

他往上看看，往下看看，测量了一下距离，又计算了适当的风向和风速。

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Another challenge facing the grid involves the long-distance transmission of renewable electricity from places that receive a lot of wind and sun to those that do not.

电网面临的另一个挑战是涉及到远距离新兴电流从风和阳光充足的地方到不足的地方的传输。

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A medium-thick shelterbelt can reduce wind velocity by more than 10 percent to a distance of 20 times the tree height on the leeward side and three times the height to the windward.

中等厚度的防风林在背风侧可在20倍于树高的距离而在迎风侧则在3倍于树高的距离上减小风速10%以上。

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Because the output of a wind turbine also tends to increase proportionally with its distance from barriers such as trees or buildings, the most productive -- and cost-effective -- turbines sit atop tall towers erected on an acre or more of open land.

CNN: Stimulus may get small wind turbines spinning

Cattle browsed in the grass, and the distinctive call of a sandhill crane carried on the wind that flowed down from ancient sand dunes in the distance.

BBC: Florida��s newest wildlife refuge

Though I laughed at the warning sign depicting a stick-figure falling head-first off the cliffs, I made sure to keep a safe distance from the drop-off for fear that the wind might actually propel me over.

BBC: Where waterfalls outnumber people