Farmersandgardenershavelongusedgreenhousestoextendthegr...
問題詳情:Farmersandgardenershavelongusedgreenhousestoextendthegrowingseasonincoldweather.Now,hoophousesaregainingpopularity.Somehoophousesarerounded;othersareshapedmorelikeatraditionalhouse.Ahoophousei...