N-UNCOUNT [oft NOUN n]死亡人数;死亡率 The mortality in a particular place or situation is the number of people who die. 死亡人数;死亡率
...the relationships between mortality and unemployment.
死亡人数和失业人数之间的关系
The nation's infant mortality rate has reached a record low.
该国的婴儿死亡率已降至历史最低水平。
Quotations
Dust thou art, and unto dust thou shalt returnBible: Genesis
Earth to earth, ashes to ashes, dust to dustBook of Common Prayer
Old mortality, the ruins of forgotten timesThomas BrowneHydriotaphia
All men think all men mortal but themselvesEdward YoungNight Thoughts
Man that is born of a woman is of few days, and full of trouble. He cometh forth like a flower, and is cut down; he fleeth also as a shadow, and continueth notBible: Job