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Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective functioning. Enzyme systems of mammals and birds are most efficient only withi
新东方背诵文选
Some bacteria have adapted to super cold environments for millions of years. And scientists have isolated some of the essential genes that allow bacteria to tolerate their harsh living conditionsbecause these same genes might help in the creation of
英语杂谈
India rapped over birth bias 印度因婴儿性别偏见遭谴责 India is seeking to get population growth down 印度正在寻求降低人口出生率的办法 The United Nations Population Fund has taken India to task over its ratio of females to
双语有声阅读
It happens every summer: offices turn on the air-conditioning, and women freeze into popsicles. But until now, there was no data to understand why women felt cold and were slipping on cardigans while men just rolled up their sleeves at the same tempe
英语新闻
饶舌:Tech N9NE - Check Yo Temperature 相关介绍 ：2008年9月是Tech N9NE事业的一个里程碑，他的双CD专辑《Killer》突破100万张的销售记录。2009年4月7日，Rock The Bells 2009 Festival邀请他来做演出，今年10月的
节奏布鲁斯
It happens every summer: offices turn on the air-conditioning, and women freeze into popsicles. But until now, there was no data to understand why women felt cold and were slipping on cardigans while men just rolled up their sleeves at the same tempe
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