spurwheel

例句：

1. 1. The ship's engine is a powerful propeller that powers the ship forward.
   这艘船的引擎是一个强大的推进器，为船提供前进的动力。
2. 2.The spacecraft used a propulsion wheel to reach its destination.
   宇宙飞船使用了推进器到达其目的地。
3. 3. The boat's propeller was damaged during the storm, causing it to lose speed.
   暴风雨中，船只的推进器受损，导致它失去了速度。