Sometimes,thesimplestideasarethebest.Forexample,toabsor...
問題詳情:Sometimes,thesimplestideasarethebest.Forexample,toabsorbheatfromthesuntoheatwater,youneedlarge,flat,blacksurfaces.Onewaytodothatistobuildthosesurfacesspecially,ontheroofsofbuildings.Butwhygotoall...