单词：permutate
单词：permutate 相关文章
The World Health Organization says about 500,000 people die every year from seasonal flu. To combat that, doctors recommend getting a flu vaccine at the beginning of each flu season and researchers are now working on a universal vaccine that could pr
VOA标准英语2010年(十二)月
1. Rescue and relief efforts continue in Pakistan. The UN's emergency relief chief fears they are running out of time to get help to remote villages cut off by blocked roads. 2. Scores of Islamic mili
美联社新闻一分钟2005
By Cathryn Curtis Washington, DC 16 March 2006 watch Bird Flu Mutations report Swabing inside of mouth of bird As the threat of bird flu spreads around the world, the big question on the minds of scie
2006年VOA标准英语（三月）
Each year, scientists work to develop a unique influenza vaccine to protect people against the strain expected in the coming flu season. Mutations in the virus mean that last year's vaccine probably won't protect against this year's flu variety. Now,
VOA标准英语2010年(七)月
台湾籍旅美老师今天交给我们的句子是： When studying these fruit fly brains, scientists identified one single gene that, when mutated, rendered a female completely incapable of deciding on a mate - even when a male is trying really ha
留美老师带你每日说英文