tractor ligroin

例句：

1. 1.The farmer used a tractor to pull the heavy load.
   农民使用拖拉机来拉动沉重的负载。
2. 2. The tractor was old but still worked well.
   这辆拖拉机旧了，但仍然工作得很好。
3. 3. The tractor was a great help in moving the heavy equipment.
   这辆拖拉机在移动重型设备时起到了很大的帮助。