You can take commercial foods, like Wheaties, and go to the manufacturer and try to figure out how many boxes of these things are produced.

对象可以是麦片那样的商品,去联系制造商然后估算出,这些东西生产了多少箱

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The virus then can self-assemble, that is, you've made a lot of genetic material, you've made a lot of the structural pieces, there has to be some way that the virus can reassemble, repackage itself into active forms.

于是,病毒可以进行自组装了,也就是说,已经制造出大量的遗传物质,也制造出了大量蛋白质外壳,那么病毒就能通过某些方式,重新装配或者重新组合成活性状态

耶鲁公开课 - 生物医学工程探索课程节选