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肩の研究⑤ 肩可動（背面）の解説
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■ENGLISH
Movement of the Shoulder: Back
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■中文
肩膀研究⑤ 肩膀可动（背面）的解说
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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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