老鷹的視力3000米，眼球含有大量的硒元素，是人眼球硒含量的100倍。

來源: 禦用文人於 2013-09-01 11:59:47 [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.