Hinge joint at elbow allows movement in one plane.
铰链关节—在手肘容许一平面的运动。
A support hinge is arranged on the rotary elbow and is fixed on a reversing frame.
在所述旋转弯头上设有支承铰链，支撑铰链固定在回转架上。
Right-elbow is in front of my body not jam to the side, my left arm is swinging towards the golf ball, and my wrists have maintained their hinge. My left arm is close to my chest;
右手臂右手肘是在我的胸口的前方，不是挤在我的身边的腰上，我的左手臂是往球位挥过去，我的手腕还是保持它的弯曲（hinge）。
Right-elbow is in front of my body not jam to the side, my left arm is swinging towards the golf ball, and my wrists have maintained their hinge. My left arm is close to my chest;
右手臂右手肘是在我的胸口的前方，不是挤在我的身边的腰上，我的左手臂是往球位挥过去，我的手腕还是保持它的弯曲（hinge）。
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