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胴体の可動『屈曲・伸展』解説
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Movement of the Torso : Flexion/Extension
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■中文
躯干的可动『屈曲・伸展』解说
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胴体の違和感と修正法まとめ
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Torso : Summary of the common mistake
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躯干的违和感以及修正总结
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