At the margin, I'm reaping, I'm bearing the cost for the extra unit of effort I contribute, but I'm only reaping half of the induced profits of the firm, because of profit sharing.

从边际角度分析,我承担了多付出的全部边际成本,但我却只能得到一半的边际收益,因为利润是均分的

耶鲁公开课 - 博弈论课程节选

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