當自然加速時，身體不自主前傾；後腿用力蹬，步子才能大；隨著步幅增大，臂擺也加大；結果：重心不穩，消耗增大，安全性低

來源: fuz 於 2022-08-11 09:31:51 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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