We can see its family tree - and its daddy was a virus that evolved in the artificial breeding ground of a vast factory farm in North Carolina.
我们能看到这个病毒的谱系，它的上代病毒是北卡罗莱纳州一个大型集约化动物农场的人工繁殖基地中演化出来的一个病毒。
The results of the study will provide a solid theoretical foundation on clones of breeding, genetic preservation, factory production areas. The mains results are as follows:1.
研究结果将为凤梨优良无性系繁殖、基因保存、工厂化生产等方面奠定坚实的理论基础。
This paper aims to explore the prospect of developing energy and environmental engineering of the centralization-breeding factory in the cold area.
本文旨在探求在高寒地区集约化养殖场开展能源环境工程建设的前景。
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