![Windpowerisaverycleansourceofenergy.Thisishowwindpowerw...]( "Windpowerisaverycleansourceofenergy.Thisishowwindpowerw...")
- 問題詳情：Windpowerisaverycleansourceofenergy.Thisishowwindpowerworks.Windmakeswindmillsspin(旋轉).Whenthewindmillsspin,theymakeelectricity.Thenwecanusetheelectricity.Alotofpeoplethinkthatwindpowerisnew,butthat’snotthousandsofyears,peoplehaveusedwindt...
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