human excreta

例句：

1. 1. The city's sewage system is responsible for the collection and treatment of human excreta.
   城市的污水处理系统负责收集和处理人类的排泄物。
2. 2.The farmers used to dump their human excreta into the nearby river.
   农民过去会把他们的排泄物倒进附近的河流。
3. 3.The government has implemented strict regulations to prevent the contamination of human excreta in public areas.
   政府已经实施了严格的规定，以防止公共区域的人类排泄物的污染。