1·A pusher propeller has been fitted at the rear of the X2 to provide extra oomph.
与此同时，一台推进器也已经被装配在了X2的机身后方，以此来提供额外的推力。
2·The Sikorsky X2 has a pusher propeller mounted at the rear to obtain its high forward speed.
美国西科斯基公司的X2拥有一部安装在后方的推进螺旋桨，这使它获得高速的前飞速度。
3·The X2 uses a pusher propeller mounted at the rear and has a pair of contra-rotating main rotors, one positioned above the other.
它使用一个安装在后面的推进式螺旋桨并有一对一上一下反向旋转的主旋翼。