They had longer life expectancies than their parents. 他们比上一辈人的预期寿命(LE)要长。
Average life expectancy went down from about 70 to 67. 平均预期寿命(LE)从70岁左右降到了67岁。
Regional pilot health reform project contributes to decrease in infant mortality, increase in life expectancy. 区域卫生改革试点项目为降低婴儿死亡率、增加人口预期寿命(LE)作出了贡献。
This is due in part to medical discoveries which have greatly reduced infant mortality and extended life expectancy. 这种增加的部分原因是医学方面的新发现大大减低了婴儿的死亡率和延长了寿命。