单词：aviadenovirus avian marble spleen disease
单词：aviadenovirus avian marble spleen disease 相关文章
Avian Flu Poses Ominous Threat to World, says US Health Official 美国卫生部称禽流感对世界造成威胁 A top U.S. health official says the country is preparing for the possibility of a dead
VOA2005（上）--环境科学探索
By John Shields Washington 10 February 2006 watch Africa Bird Flu report Chickens for sale in a Lagos market The World Health Organization says this week's outbreak of the deadly H5N1 avian flu virus
2006年VOA标准英语（二月）
By Lisa Schlein Geneva 23 May 2006 Public Health Experts attending the World Health Assembly say the H5N1 virus in birds is rapidly spreading around the world. The World Health Organization urges nati
2006年VOA标准英语（五月）
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）
AGRICULTURE REPORT - Avian Flu Could Force Changes for Asian Poultry Farmers By Mario Ritter Broadcast: Tuesday, March 15, 2005 I'm Gwen Outen with the VOA Special English Agriculture Report. Avian in
农业与发展
By Sabina Castelfranco Rome 12 October 2006 The United Nations Food and Agriculture Organization on Thursday inaugurated a new Crisis Management Center to fight avian influenza outbreaks and other major animal health or food health-related emergenci
2006年VOA标准英语（十月）