cutoff wheel

例句：

1. 1. The car's engine is running smoothly, but the cutoff wheel is stuck in the middle of the road.
   汽车的引擎运行平稳，但是切断轮卡在了路上。
2. 2. The old man used to drive a horse and cart with a cutoff wheel.
   那位老人过去常骑着有切断轮的马车。
3. 3. The construction workers are using a special tool to cut off the wheel of the heavy machine.
   建筑工人正在用一种特殊工具来切断这台重型机器的轮子。