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肩の研究①・肩の基本構造(静止)
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Structure of the shoulder basics
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肩膀研究①・肩膀的基本结构（固定式）
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肩の違和感と修正法まとめ
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Shoulder : Summary of the common mistake and the correcting method
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肩膀的违和感以及修正总结
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