单词：ecdysteroids
单词：ecdysteroids 相关文章
By David McAlary Washington 23 May 2006 Chickens at US farm Scientists have developed an efficient, cheap way to vaccinate birds against avian influenza and possibly prevent the spread of the deadly H
2006年VOA标准英语（五月）
By Carol Pearson Washington 28 March 2007 watch Stent Study report A new, landmark study finds heart stents devices used to open blocked arteries - may not be as effective in the long term as medication in preventing heart attacks. VOA's Carol Pears
2007年VOA标准英语（三月）
Steroids Affect Brain Development in Premature Babies Premature babies routinely get powerful steroids both before and after they are born. The drugs help the babies' tiny lungs mature and boost blood pressure, among other benefits. Previous research
VOA标准英语2011年(十月)
Todd: Talking about body alterations, I think for men it's not so much cosmetic surgery, but it's steroids these days. That's the hot topic. Wendi: Do you think so? Todd: Well, I'll tell you, when I was in high school, I knew so many guys that did st
原版英语对话1000个
1 If you are flying Delta in the new year, expect to pay more for check bags. It will now cost you 23 dollars for the first bag and 32 for the second. That's an increas of eight dollars for the first bag and seven for the second. 2 Relief from the co
美联社新闻一分钟2010(一月)
Voice 1 Welcome to Spotlight. Im Joshua Leo. Voice 2 And Im Liz Waid. Spotlight uses a special English method of broadcasting. It is easier for people to understand - no matter where in the world they live. Voice 1 Jaap Stam was living the dream of m
环球英语 Spotlight