非常感謝你的科普，不過現代人沒耐心讀長文。俺就看到：國人多缺D。要吃深海魚，補D，曬太陽

來源: 外鄉人於 2021-02-17 10:01:10 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.