名詞 mortality:

1. the quality or state of being mortal
2. the ratio of deaths in an area to the population of that area; expressed per 1000 per year
   同義詞：deathrate, death rate, mortality rate, fatality rate

1. The mortality wrought by an epidemic.
   由一傳染病引起的大批死亡
2. If this disease spreads, the doctors fear that there'll be a high mortality.
   如果這種病傳播開來，醫(yī)生們擔(dān)心死亡率將會很高。
3. Infant mortality (ie The rate at which babies die) was 20 deaths per thousand live births in 1986.
   1986年的嬰兒死亡率為生育成活率的千分之二十。
4. Infant mortality is still very high in some developing countries.
   某些發(fā)展中國家的嬰兒死亡率仍然很高。

mor.tal.i.ty

n.（名詞）
【復(fù)數(shù)】 mor.tal.i.ties
The quality or condition of being mortal.
必死性：瀕臨死亡的特征或狀態(tài)
Death, especially of large numbers; heavy loss of life:
殺傷力：死亡，尤指大批死亡；沉重犧牲：
例句：
the mortality wrought by an epidemic.
由一傳染病引起的大批死亡

Death rate.
死亡率
The rate of failure or loss:
失敗率或損失率：
例句：
the high mortality among family-run farms.
私營農(nóng)莊的高破產(chǎn)率