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美女小韩乒乓球勾手发侧上旋要点，击球点低前臂手指手腕向上摩擦
美女小韩老师教乒乓球勾手发侧上旋要点，击球点低前臂手指手腕向上摩擦拍头冲上方
勾手发球技术，包括握拍方法，引拍动作要领，击球动作等30/37
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美女小韩老师教乒乓球勾手发侧上旋要点，击球点低前臂手指手腕向上摩擦拍头冲上方
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