Windpowerisaveryclea的精選

問題詳情：Windpowerisaverycleansourceofenergy.Thisishowwindpowerworks.Windmakeswindmillsspin(旋轉).Whenthewindmillsspin,theymakeelectricity.Thenwecanusetheelectricity.Alotofpeoplethinkthatwindpowerisnew...