Then they test you to make sure that you have adequate protection, and some people need an additional shot after that.

然后医生会检测以确定你已获得了保护,有些人在测试完后需要再打一针

耶鲁公开课 - 生物医学工程探索课程节选

For example, what if you could make a hepatitis vaccine that was good in one shot instead of three shots?

比方说,如果你研制的一种肝炎疫苗,只需接种一次,而不是三次会怎么样

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