集水沟

例句：

1. 1. The farmer had to repair the damaged irrigation ditch.
   农民不得不修理损坏的灌溉沟渠。
2. 2. The city planners are working on a new drainage system for the collection of rainwater.
   城市规划者正在为雨水收集工作新的排水系统。
3. 3. The farmers used to collect water from these ditches for their crops.
   农民过去从这些沟渠中收集水来浇灌他们的庄稼。