pusher airscrew

例句：

1. 1. The construction crew used a bulldozer to clear the path for the new road.
   施工队使用推土机为新路开辟了道路。
2. 2.The bulldozer was used to level the land before the construction began.
   在建设开始之前，使用了推土机来平整土地。
3. 3. The bulldozer was used to break up the rocky terrain and make way for the construction.
   推土机被用来打破岩石地形并为建设工作让路。