propeller

n. 螺旋桨,推进器

Can you free the propeller from the weeds?

你能把螺旋桨上的草除掉吗?

The distance that a propeller would travel in an ideal medium during one complete revolution, measured parallel to the shaft of the propeller.

推进器转一圈的距离飞机螺旋桨旋转一次的前移距离，以其与螺旋桨相平行的距离衡量