夏日的風(fēng)可以帶來(lái)涼意,冬日的風(fēng)可以吹起漫天的雪花,此外,風(fēng)還有什么作用呢?
For centuries, farmers have used windmills to pump water, crush grain and perform other tasks. Today, farmers can earn money with high-powered wind turbines that produce electricity. Wind power has become big business, especially in Europe. In the United States, less than one percent of electricity…