propeller

/prəˈpɛlər/

a mechanical device that rotates to push against air or water

中文释义：螺旋桨；推进器

The airplane's propeller spins rapidly to generate thrust for takeoff.

飞机的螺旋桨快速旋转，为起飞产生推力。

A damaged propeller can cause a boat to lose power in the water.

损坏的螺旋桨会导致船在水中失去动力。