太陽裏麵的紫外線能量非常大，可以改變細胞內的DNA結構，可以引起皮膚癌和衰老。

來源: gracee 於 2024-12-29 13:13:54 [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.