And you've all been vaccinated, I would guess, for hepatitis B.

我猜,你们都接种过乙肝疫苗了

耶鲁公开课 - 生物医学工程探索课程节选

So if you could make a hepatitis B vaccine that didn't require a shot or that didn't require refrigeration, that would be a tremendous advance in spreading that vaccine through the world.

所以如果你可以开发出这样的乙肝疫苗,它不需注射就能接种,或者不需要冷藏,这样的巨大进步,能够将疫苗的使用普及至全世界

耶鲁公开课 - 生物医学工程探索课程节选