她一家人住在主宅后面一个独立的三居室套房里。
Her family lives in a self-contained three-bedroom suite in the back of the main house.
每扇门后面都不是善主。
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。
The X2 uses a pusher propeller mounted at the rear and has a pair of contra-rotating main rotors, one positioned above the other.
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