单词：temperature extremal
单词：temperature extremal 相关文章
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
Hi, Im Becky Worley and this is Good Stuff. Its flu season and were more vigilant than ever about all the flues that are making around, when your kids are sick, you take their temperature, but thats easier said than done. The words Rattle thermometer
英语杂谈
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
By Nico Colombant Kano, Nigeria 18 April 2007 A police official in northern Nigeria says security forces have chased away foreign religious radicals outside the main city of Kano, restoring order ahead of Saturday's presidential election. The clashes
2007年VOA标准英语（四月）
By Bill Rodgers Washington 24 April 2007 U.S. Secretary of State Condoleezza Rice presided over a special naturalization ceremony at the State Department to swear in 50 new American citizens. Four naturalized Americans also were singled out for speci
2007年VOA标准英语（四月）
The Prime Ministers of Hungary and Slovakia have agreed to tackle extremism as part of efforts to overcome their countries' worst diplomatic crisis in years. They made the announcement following a meeting at the Hungarian-Slovak border Thursday. Bot
VOA标准英语2009年(九月)