Feeding the steering wheel hand-to-hand is a very safe way to steer a car.
以手把手握着方向盘的方式教人开车，是非常安全的驾驶方式。
The straight arm is brought around in a full circle, with the hand flat (see paddle wheel figure).
直臂划手是把手臂绕一个整圈，手平放(就像明轮的图)。
If a spring is present, the hand wheel will pivot on the spring.
如果有弹簧，手轮的枢轴会装在弹簧上。
If a spring is present, the hand wheel will pivot on the spring.
如果有弹簧，手轮的枢轴会装在弹簧上。
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