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肘の可動・屈曲(回外時)の基本解説
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Movement of the elbow: (supinated)
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肘部可动・屈曲（旋后时）的基本解说
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腕の違和感と修正法
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Arm: Summary of the common mistake and the correcting method
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手臂的违和感以及修正总结
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