单词：vaccina
[医] 牛痘
n a local infection induced in humans by inoculation with the virus causing cowpox in order to confer resistance to smallpox; normally lasts three weeks and leaves a pitted scar
词型变化：名词复数形式 : vaccinas
【近义词】
单词：vaccina 相关文章
The warring factions in Afghanistan say they will heed a call by the United Nations to stop fighting so aid workers can begin a three-day polio vaccination campaign. The Taliban, the Afghan army and international military forces say they will halt t
发表于:2019-01-13 / 阅读(111) / 评论(0)
VOA标准英语2008年（九月）
VOA标准英语2008年（九月）
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
发表于:2019-01-13 / 阅读(217) / 评论(0)
2006年VOA标准英语（五月）
2006年VOA标准英语（五月）
HEALTH REPORT - Countries in the Americas Observe Vaccination Week By Cynthia Kirk Broadcast: Wednesday, April 27, 2005 I'm Gwen Outen with the VOA Special English Health Report. Officials hope to vac
发表于:2019-01-30 / 阅读(206) / 评论(0)
健康与经济
健康与经济