| 例句 |
Many cities discharge their sewage into the sea without treating it at all.许多城市在根本未经处理的情况下将污水排放到海里。Great flocks of gulls gather at rubbish tips and sewage outfalls.大群海鸥聚集在垃圾堆和污水排放口处。There should be greater treatment of sewage before it is discharged.污水排放之前应该进行更充分的处理。Discharge of raw sewage into the sea is unsanitary and unsafe.把未经处理的污水排放到海里既不卫生也不安全。Cities upstream use the river to get rid of sewage.上游的城市将污水排放到河里。 |