mortalityKK [mɔrˋtæləti] /mɔɹˈtæləti/發音名詞1死亡率Infant mortality has dropped sharply over the past two decades.過去二十年來,嬰兒死亡率大幅下降。2必死、終將一死正式A serious illness forced him to confront his own mortality.一場重病讓他不得不面對自己終將一死的事實。3死亡人數The storm caused heavy mortality among young seabirds.這場暴風雨造成大量幼年海鳥死亡。