Wastewater from the entire building flows into a holding tank where solids settle, like in a septic tank.

整座大楼的废水流进一个蓄水池。就像在化粪池里一样，固体被沉淀。

youdao

Wastewater from the entire building flows into a holding tank where solids settle, like in a septic tank.

整座大楼的废水流进一个蓄水池。就像在化粪池里一样，固体被沉淀。

youdao