cotter mill cutter

例句：

1. 1. The lawn mower is the most important tool for maintaining a well-maintained lawn.
   割草机是维护良好草坪最重要的工具。
2. 2. We need to replace the lawn trimmer after every use to keep it in good condition.
   每次使用后都需要更换割草机，以保持其良好状态。
3. 3. The lawn mower has been used for many years and needs regular maintenance.
   割草机已经使用了多年，需要定期维护。