CONTROL SURFACE, Moveable panels on wings and tail for movement of airplane on pitch, roll and yaw axes.
操纵面，机翼和机尾上的可动面板，用以操纵飞机俯仰，坡度，和偏航运动。
2
It can roll about a line from nose to tail — the longitudinal axis; and it can yaw, left or right, about the vertical axis.
他可以绕着从机头到机尾的纵轴来翻滚；并且可以绕着竖轴向左或向右偏航。
3
With square facial-tissue boxes, you can carefully open the bottom and put a roll of bathroom tissue in them, with the tail sticking out, and use it as facial tissue for a fraction of the cost.