self-propelled three-row rotary cultivator

例句：

1. 1. The self-propelledvehicle can travel long distances without adriver.
   这种自驱动车辆可以在没有驾驶员的情况下行驶很长的距离。
2. 2. The self-propelled tractor is ideal for farmingin the countryside.
   这种自驱动拖拉机非常适合农村的耕作。
3. 3. The self-propelled train is an efficient way to transportgoods across large distances.
   自驱动的火车是一种高效的方式，用于在长距离内运输货物。