urban polluted disposal

• 城市污水处理

urban polluted disposal的用法和样例：

例句

1. Sewage treatment fees collected shall be used for the construction and operation of the facilities for central treatment of urban sewage and may not be used for other purposes.
   收取的污水处理费用必须用于城市污水集中处理设施的建设和运行，不得挪作他用。