ecolgy生态学ECOpref.表示“环境”；“生态”；“生态学的”ecological dredging生态疏浚ecological use land生态用地ecological security生态安全ecological progress生态化进程econormic operation经济运行Econometric Society计量经济学会Eco - culturalism经济文化学ecological approach生态(学)(处理)方案,生态学出发点ecological standard生态本位ecological planning生态规划