多鍛煉小臂，加強手臂的肌肉。手腕和前臂要熱身。正確的擊球方式。這些才是治本的。

來源: Tortoises 於 2017-02-06 06:59:40 [舊帖] [給我悄悄話] 本文已被閱讀：次

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