手臂延伸更容易。
Extension of the injured arm was painful.
把受伤的胳膊伸展开是很疼的。
Upper arm is about equal in length to the shoulder blade in order to allow for good extension.
上臂长度约等于肩胛骨，以便为良好的扩展性。
The left arm continues to achieve relative extension via right body rotation.
左臂通过身体右转完成相关拉伸。
The left arm continues to achieve relative extension via right body rotation.
左臂通过身体右转完成相关拉伸。
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