cleaning ditch

例句：

1. 1. The workers were busycleaning the ditch to remove the trash.
   工人们忙着清理沟渠，以清除垃圾。
2. 2. The farmer decidedto clean his ditch before winterset in.
   农民决定在冬天来临之前清理他的沟渠。
3. 3. The citygovernment is responsible for maintainingthe cleanliness of the ditches.
   市政府负责维护沟渠的清洁。