单词：colony forming efficiecy
单词：colony forming efficiecy 相关文章
Forming a Union Norma: What is this? Jimmy: Its a flyer for a meeting Ive called to talk about forming a labor union here. Norma: Here? Do you think the management will let us? Jimmy: They cant stop us. Were working longer and longer hours and we nee
2013年ESL之商务英语
Water Blankets Forming Planets A study in the journal Science finds much more molecular water in regions where planets are forming around young stars. The mechanism to keep the water from being destroyed by UV radiation appears to involve some of the
60秒科学
Life was not easy when Emma Seguy first arrived in Mesa, Arizona. The 20-year-old was born in Paris, France. But when she was 16, she decided she wanted to be more independent and to try something new. So, Seguy asked her parents if she could complet
2018年VOA慢速英语(六)月
Welcome to THIS IS AMERICA in VOA Special English. I'm Steve Ember. VOICE TWO: And I'm Faith Lapidus. Roanoke Island is off the mid-Atlantic coast of the United States, in North Carolina. In fifteen eighty-seven, more than one hundred people arrived
VOA慢速英语2008年（八）月
Locust Swarms Forming in West Africa Four countries in West Africa have been put on alert for the likely arrival of swarms of Desert Locusts. If uncontrolled, a small swarm can eat the same amount of food in one day as 35-thousand people. Locust swar
VOA标准英语2012年(十月)
By Mil Arcega Washington 09 April 2007 Watch Boeing Fuel Efficient Jets Boeing 787, Fuel Efficient Jets After years of lagging behind European rival Airbus, Boeing says 2007 is shaping up to be a very good year. The Chicago based airplane manufacture
2007年VOA标准英语（四月）