sewage wastewater是什么意思（wastewater 和 sewage的区别）

sewage，wastewater污水、废水语例句1Two Stage Anaerobic-Contacting Oxidation Process Treatment ofSewage Wastewater from Scenic Spot二级厌氧-接触氧化工艺处理风景区污水 2Plan on treating sewage wastewater in housing estate小区生活污水的治理方案