The circulatory system which we'll talk about in a couple of weeks, the heart, the blood vessels, and the blood work together to form a totally internal function.

例如过几周我们要讲的循环系统,心脏,血管,血液,三者协同工作,形成一个完全在体内发挥作用的体系

耶鲁公开课 - 生物医学工程探索课程节选

So, that particular sub unit vaccine was only used in people that are at high risk for acquiring Hepatitis B, that is, people that work in healthcare situations that are exposed to blood routinely as part of their job.

因此,那些特殊的亚基疫苗当时仅用于,极有可能感染乙肝的高危病人身上,也就是那些在日常工作中,频繁的接触血液的健康护理人员

耶鲁公开课 - 生物医学工程探索课程节选