騎自行車其實很傷膝蓋的，膝蓋裏的潤滑會磨損。遊泳最好。我原來的老板騎車多年，最後換膝蓋。

來源: shparis 於 2025-10-01 22:13:02 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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