mid-14c., "condition of being mortal," from Old French mortalite "massacre, slaughter; fatal illness; poverty; destruction" (12c.), from Latin mortalitem (nominative mortalitas) "state of being mortal; subjection to death," from mortalis (see mortal (adj.)). Meaning "widespread death" is from c. 1400; meaning "number of deaths from some cause or in a given period" is from 1640s.
实用例句
1. Premature birth is the main cause of perinatal mortality.
早产是临产死亡的主要原因。
来自柯林斯例句
2. The study also demonstrated a direct link between obesity and mortality.
该研究还表明了肥胖症和死亡率之间存在直接的联系。
来自柯林斯例句
3. The United States ranks 20th in its infant mortality rate.
美国在婴儿死亡率方面排名第20。
来自柯林斯例句
4. She has suddenly come face to face with her own mortality.
她突然间陷入了直面死亡的境地。
来自柯林斯例句
5. After her mother's death, she became acutely aware of her own mortality.
