The effects of altitude aside, some sports engineers maintain the ball's unusual movements can still be chalked up to its smooth stitchless design.
除了海拔的影响，一些体育工程师记录下了这款球不寻常的动态，这些动态仍会被记录下来用于无缝平滑设计。
I maintain a heading away from the crowd as I gain the altitude I need to pitch back in.
在我增加高度转向返回的过程中我始终让机头与观众保持一定的偏离。
Use collective control to maintain constant altitude and speed. Fly away from the maneuver straight and level.
执行后退侧滚时，请控制主旋翼的螺距，以便维持固定的高度及速度。
Use collective control to maintain constant altitude and speed. Fly away from the maneuver straight and level.
执行后退侧滚时，请控制主旋翼的螺距，以便维持固定的高度及速度。
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