可以先从最简单的移动来感觉动作要领。
简述了飞机斤斗飞行的基本运动关系和操纵动作要领。
First it analyses the basic movement relation and states control actions shortly in the single plane loop.
为更好地推广群众体育运动，使一般人易于掌握动作要领。
To promote the mass sports movement well, causes the average person easy to know the movement main point.
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