Ecossi埃科西ECOpref.表示“环境”；“生态”；“生态学的”ecological husbandry生态养殖ecological economics生态经济学ecological valuation价值评估ecological designing生态设计econometric analysis[经] 经济计量分析ecological traveling生态旅游eco - river course生态河道ecological soicalism生态社会主义ecological geobotany生态地球植物学economies of density密度经济