But these slow-wilting lines, he says,produce four to eight bushels more than normal soybeans under drought conditions.

VOA: special.2009.03.23

So, how could you produce--the question is, how could you produce large quantities of this- of this microorganism, this virus vaccinia under controlled conditions?

问题是该怎么进行生产,你怎么大批量生产这种微生物,即在可控条件下生产牛痘病毒

耶鲁公开课 - 生物医学工程探索课程节选

Ewes produce lambs. A lamb is a sheep under a year old.

VOA: special.2009.07.21