tractor crane

例句：

1. 1. The tractor crane was used to move theheavy equipment.
   拖拉机起重机被用来移动重型设备。
2. 2. The tractor crane was usedto lift the heavy load.
   拖拉机起重机被用来举起沉重的负载。
3. 3. The tractor crane was used to transport the goods fromone place to another.
   拖拉机起重机被用来将货物从一个地点运输到另一个地点。