单词：localized random mutagenesis
单词：localized random mutagenesis 相关文章
The conversation drifted smoothly and pleasantly along from weather to crops, from crops to literature, from literature to scandal, from scandal to religion; then took a random jump, and landed on the subject of burglar alarms. And now for the first
马克吐温最佳短篇小说
They are crunchy, small, folded, and light brown in color (colour). They usually come in individual, plastic packets. They don't fill you up, but they are an important part of certain meals. They hold a different promise for each person at the table.
英语博客 A cup of English
This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? Ever been woken up by the sound of the refrigerator compressor kicking on? Well, such clumsy heat exchange units featuring long metal coils may be on their way out. Becaus
Scientific American(八)月
This is Scientific Americans 60-Second Science. I am Cynthia Graber. This will just take a minute. Ants are known for working together, operating as a unit for the good of the colony. But not so fast, say researchers from the Universities of Leeds an
Scientific American(三)月
This is the VOA Special English Health Report. Researchers say more than half of young people who use MySpace often discuss high-risk behaviors. Two studies of the social networking site recently appeared in the Archives of Pediatric and Adolescent
VOA慢速英语2009年（二）月
今天我们要学的词是random。 Random, 是随机、任意的意思。The firefighters have to undergo a random drug test once a year, 消防队员每年要接受一次是否服用毒品的抽查。The boxer refused to submit random blood tests
英语每日一词