aero-propeller

例句：

1. 1. The aircraft's propeller spins at high speeds to lift the plane off the ground.
   飞机的推进器以高速旋转，使飞机离地起飞。
2. 2. The aerodynamic propeller is designed to reduce drag and improve efficiency.
   这种空气动力学推进器设计来减少阻力并提高效率。
3. 3. The propeller was damaged during testing and had to be replaced.
   在测试中，推进器受损，不得不更换。