sewage retrieval and utilization

• 污水回用

sewage retrieval and utilization的用法和样例：

例句

1. With the increase of water pollution and reduction of usable water resources, people begin to pay attention to sewage recycle technology.
   摘要随着水质污染日益严重和可利用水资源减少，人们越来越重视污水回用技术的应用。