01 2015 档案

Why Human Beings Normally Sleep at Night?
摘要：Why mental workers keen on working into deep night?At night, sun goes beneath the horizon -> water and nutrition in human body concentrate at feet -> ... 阅读全文
posted @ 2015-01-13 19:13 孙檐冰的博客 阅读(112) 评论(0) 推荐(0)