就是說，勤動腦才好。所以要做有挑戰性的鍛煉，不斷學習和提高，這樣腦和身體都得到了鍛煉。

來源: lawattaction 於 2019-04-28 09:34:56 [舊帖] [給我悄悄話] 本文已被閱讀：次

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