life expectancy
(a) number of years that a person is likely to live, esp as statistically determined for insurance purposes 预期寿命(尤指人寿保险估计)
Women have a higher life expectancy than men. 女人比男人的预期寿命长.
(b) length of time sth is likely to exist or function (某事物的)预期存在的期限
the life expectancy of the average car, the present government 一般汽车使用的、 现政府执政的预期年限.
and that if only the common peoples of the would could meet one another at football or cricket, they would have no inclination to meet on the hattlefield.