nubbin cut off machine

例句：

1. 1.The lawn mower is a common tool for cutting the grass in our backyard.
   割草机是我们后院常见的修剪草坪的工具。
2. 2. The lawn mower was designed to make the job of cutting the grass easier.
   割草机的设计是为了使修剪草坪的工作更加容易。
3. 3. The lawn mower has become an essential part of maintaining a well-maintained lawn.
   割草机已经成为维护良好草坪必不可少的一部分。