我相信人體和機器一樣一定有Wear and tear，不可能無休止地增強骨骼強度，到了一定年歲鍛煉也隻是緩減流失的速度

來源: Gbdjw 於 2016-05-23 07:49:58 [舊帖] [給我悄悄話] 本文已被閱讀：次

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