grass mower

例句：

1. 1.The lawn mower is very useful for cutting the grass.
   割草机对于修剪草坪非常有用。
2. 2. I need to buy a new lawn mower for my garden.
   我需要为我的花园买一台新的割草机。
3. 3. The old lawn mower broke down and we had to buy a new one.
   旧的割草机坏了，我们不得不买了一台新的。