当它在水中或空气中旋转时就对桨叶产生推力，然后推动交通工具前进。
By its rotation in water or air, the propeller produces thrust on the Blades, which gives forward motion to the vehicle.
这个很有意思，明轮推水或者桨叶方式的推水产生了上举力和向前的推力，在这种情况下上升力和推力会叠加在一起。
Interestingly, the paddle wheel or propeller style movement creates lift and thrust. In this case lift adds to thrust.
虽然与直升机外观相似，但自转旋翼机必须依靠向上流过桨叶地气流维持旋翼地旋转，产生将飞行器维持在空中地升力以及向前飞行地推力。
While similar to a helicopter rotor in appearance, the autogyro's rotor must have air flowing up and through the rotor disk in order to generate rotation.
虽然与直升机外观相似，但自转旋翼机必须依靠向上流过桨叶地气流维持旋翼地旋转，产生将飞行器维持在空中地升力以及向前飞行地推力。
While similar to a helicopter rotor in appearance, the autogyro's rotor must have air flowing up and through the rotor disk in order to generate rotation.
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