The large domestic Wastewater Treatment Plant (WWTP) has been around just for more than twenty years.

国内的大型城市污水处理厂起步较晚，仅有二十几年的历史。

youdao

The large domestic Wastewater Treatment Plant (WWTP) has been around just for more than twenty years.

国内的大型城市污水处理厂起步较晚，仅有二十几年的历史。

youdao