Each consumer is going to buy one product, either from Firm 1 or from Firm 2.

每个消费者会买一个产品,从公司1买或者从公司2买

耶鲁公开课 - 博弈论课程节选

And much easier to purify and know what you have at the end, than if you're trying to harvest it from a whole complex organism.

最终产品的纯化和鉴定也比,从复杂的生物体上提取和鉴定容易

耶鲁公开课 - 生物医学工程探索课程节选