老年人新陳代謝慢，細胞增殖慢，對輻射的敏感性低，輻射造成的副作用相對較小。

來源: 好好先生* 於 2013-12-09 10:20:53 [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.