Wind power has made incredible inroads into the U.S. energy system thanks to big, efficient machines standing hundreds of feet tall.
拜那些数百英尺高的高效风力机械所赐，风力发电已经令人难以置信的大跨步进驻美国能源系统。
Wind power has made incredible inroads into the U.S. energy system thanks to big, efficient machines standing hundreds of feet tall.
拜那些数百英尺高的高效风力机械所赐，风力发电已经令人难以置信的大跨步进驻美国能源系统。
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