roller tractor

例句：

1. 1. The farmer used a roller tractor to till the soil.
   这位农民使用滚筒拖拉机来翻土。
2. 2. The new roller tractor is much more efficient than its predecessors.
   这款新型滚筒拖拉机比它的前身更高效。
3. 3. The farmer was able to use the roller tractor to clear the snow from the road.
   这位农民能够使用滚筒拖拉机清除道路的积雪。