extensiveadj.广泛的；广阔的；广大的；大量的extensive pasture非集约化牧场,粗放经营的牧场extensive utility广延效用extensive culture粗养extensive reading泛读,泛读材料extensive economy粗放经济extensive feeding粗放饲养extensive meaning外延extensively quote广征博引extensive cloning粗放克隆extensive service延伸服务