At the end of this sweep of the disease through your community, one in four, or one in five, of your neighbors would die from the disease.

当这场疾病风暴肆虐完毕之后,你的邻居中,有四分之一或者五分之一的人会死去

耶鲁公开课 - 生物医学工程探索课程节选

In United states, only five percent wait that long.

在美国，只有五分之一的病人需等待。

斯坦福公开课 - 经济学课程节选