It's mortality that gives it that sense of ephemeral value, but it's also mortality that threatens to cancel it out altogether.

因为逃不过必死的结局所以给了美朝生暮死的价值，但必死性也可能带来全盘出局的威胁。

耶鲁公开课 - 1945年后的美国小说课程节选

Coronary artery disease is one of the major causes of death in western countries.

冠状动脉疾病,是西方国家主要致死性疾病之一

耶鲁公开课 - 生物医学工程探索课程节选

And the interesting point is many people who have this sort of experience, for whom their mortality has become vivid, they often say,I've got to change my life.

而且有趣的是很多拥有这种经验的人，对必死性的了解更为深刻的人，通常会说，我要改变我的生活。

耶鲁公开课 - 死亡课程节选