raw sewage sludge

例句：

1. 1. Thecity's sewage treatment plant processesmillions of gallons of raw sewagedaily.
   该市的污水处理厂每天处理数百万加仑的原始污水。
2. 2. Theraw sewage sludge was found to contain harmfulbacteria that could cause disease.
   发现的原始污水污泥含有可能引起疾病的有害细菌。
3. 3.The wastewater treatment process involves removing theraw sewage sludge before itreaches the final discharge point.
   废水处理过程包括在最终排放点之前去除原始污水污泥。