We do not have a sewage system so we discharge our wastewater into a pit beside the house and then into the street once it is full. We do this with our own hands.
这里并没有排污系统,我们只有亲手将污水排放在房子旁边的一条坑子,到坑子满溢,就排放到街上。
2
The model test aimed to study hydraulic characteristics of buffer pit ballast discharge after rock clog in deep water was blasted.