economicboom经济繁荣economicadj.经济学的；经济的；有利可图的economic progress经济进步economic category经济范畴economic auditing经济审计economic rhetoric经济修辞学Economic analyses经济分析economic contract经济合同economic downturnn.经济萎缩；经济下降economic mobility经济变动性economic dynamics动态经济学economic commerce电子商务