Most wind energy comes from turbines that can be as tall as a 20-story building and have three 200-foot-long (60-meter-long) blades.

大多数风能来自于风力发电机(涡轮机)，它有20层楼高，带有三个200英尺(60米)长的叶片。

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Wind down: I try to switch off the computer and the TV about 30 to 60 minutes before bedtime and let my brain have some down time after a long day.

放松：我设法在就寝前约30至60分钟关掉电脑和电视，经过漫长的一天，让我的大脑有一些休息时间。

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However, long hair in sleep, the wind is also a more troublesome to manage, no matter how busy, I have to dress up every day before class to arrange for a bath.

然而，头发长了在睡觉、大风中也是一个比较麻烦的打理，再忙，我都必须每日起床穿衣之前要安排洗澡课。

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Solar, wind, and other renewable technologies have come a long way since 1979.

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If you have a long leather coat, wear it, and make sure it flaps in the wind.

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In order for the investment to be a long-term success, the delivered cost of wind energy will have to drop significantly.

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