大众英语80篇背诵阅读带翻译(二十五) "50 Cells and Temperature Cells cannot remain alive outside certain limits of temperature, and much narrower limits mark the boundaries of effective function... / 2010-06-08 / 查看 1017 次

大众英语80篇背诵阅读带翻译(九) "17 Evolution of Sleep Sleep is very ancient. In the electroencephalographic sense we share it with all the primates and almost all the other mammals and birds: ... / 2010-06-08 / 查看 1 次

大众英语80篇背诵阅读带翻译(二十六) "51 Marine Mammals Since there is such an abundance of food in the sea, it is understandable that some of the efficient, highly adaptable, warm-blooded mamma... / 2010-06-08 / 查看 1 次