waste canal

例句：

1. 1. The city's waste management department is responsible for cleaning up the waste canal.
   城市的废物管理部门负责清理废水沟渠。
2. 2. The construction of this waste canal will significantly reduce the amount of wastewater discharged into the river.
   这个废水沟渠的建设将显著减少流入河流的废物量。
3. 3. The waste canal was constructed to divert excess water from the city's sewage system.
   废水沟渠被建造来从城市的污水系统中转移多余的水。