垂足的英文：
pedal

pedal是什么意思：
n. 脚蹬子；踏板
v. 骑自行车；踩踏板

The pedal of a cycle is attached to a crank.
自行车的踏板与曲柄相连。

The brake(pedal)is between the clutch and the accelerator.
制动器(踏板)在离合器和加速器之间.

The pedal had sheared off at the pivot.
踏板在枢轴处断裂了。

He pushed hard on the brake pedal to avoid a collision.
他使劲踩下煞车踏板以避免撞车。