Windpowerisaverycleansourceofenergy.Thisishowwindpowerw...
问题详情：Windpowerisaverycleansourceofenergy.Thisishowwindpowerworks.Windmakeswindmillsspin(旋转).Whenthewindmillsspin,theymakeelectricity.Thenwecanusetheelectricity.Alotofpeoplethinkthatwindpowerisnew...