economy jet省油量孔economyn.经济；节约adj.经济的；廉价的economy's dark continenteconomy energy technique节能技术economy regulatory power经济调控权economy of agglomeration合并经营的经济节约economy of county region县域经济economy of economic zone经济区经济economy--style hotel经济型酒店economy of Olympic Games奥运经济economy-class syndrome经济舱综合症Economy Development Zone经济发展带