风叶的英文：
fan blade

参考例句：

Windmill: Machine for harnessing the energy of the wind using sails mounted on a rotating shaft.
风车:藉助装在转轴上的风叶以开发风能的装置。

fan是什么意思：
n. 迷，狂热爱好者；风扇；扇子
v. 扇；煽动；吹拂

The football fans cheered their team.
足球迷们给他们的队加油。

She cooled herself with a fan.
她用扇子纳凉。

The breeze fanned her hair.
微风吹拂着她的头发。

They have inundated me with fan letters.
他们转给我的粉丝来信让我应接不暇。

There was a cluster of fans around the actor.
有一群戏迷围在这个演员身旁。

blade是什么意思：
n. 叶片；桨叶；刀片；剑

blade maintainer
单刃养路机

The cutting blade of a plow;a share.
犁刃，犁头犁上切割用的刃；铧头

The blade needs sharpening.
这刀需要磨一磨。

A small knife with blades or a blade that can fold into the handle when not in use.
小折刀，小刀一种有几个刃或一个刃的小刀，不用时可折起来收进柄内

The propellar blade is powered by a diesel engine.
螺旋桨叶由柴油发动机驱动。