It's not enough to understand the biology of how to create a vaccine, if you can't make enough of the vaccine or deliver it to people in ways that it's useful.

仅仅知道疫苗制造的,生物学原理是不够的,还得能生产出足够的疫苗,并在公众中广泛使用

耶鲁公开课 - 生物医学工程探索课程节选

Then, also emphasizing in the case of smallpox, how even after the scientific discovery was made, it took many, many decades for people to be able to produce the vaccine in large enough quantities and distribute it, so that you could think about making an impact on global prevalence of the disease.

同时重点就天花疫苗的发展展开了讨论,而即便当科学发现了天花病毒,仍然过了许多年,人类才能够,大规模生产并使用天花疫苗,由此你们可以了解到,在全球范围内,疫苗给天花以致命一击

耶鲁公开课 - 生物医学工程探索课程节选

What was--the vaccine you got was produced totally outside of people using recombinant DNA technology.

你们所使用的疫苗是利用完全,脱离于人体外的DNA重组技术生产的

耶鲁公开课 - 生物医学工程探索课程节选