The Obama administration says it is laying the groundwork to develop a vaccine against swine flu, although no decision has been made on large-scale production of such a vaccine.
VOA: standard.2009.05.03
And so in the 1940s, a group of people led by Collier started to develop a large scale production method for making a reliable source of vaccinia virus.
在二十世纪四十年代,科利尔带领一群人开始研究,一种大规模的生产方法,这种方法能制得牛痘病毒的可靠来源
应用推荐