Expectation of life is the average Numbers of years that a person is expected to live. The expectancy of life is the prediction of average years a person can live.

估计寿命是预计一个人能活得平均年数。

youdao

Back in the 1840s, life insurance was very important because the average expectancy of life was only something like forty-five years, so that meant parents were dying left and right.

在19世纪40年代的时候，寿险是非常重要的，因为当时的人均期望寿命，仅为45岁左右，这意味着双亲平均只能活到45岁。

youdao

By the year 2050, women will have a life expectancy of 83.6 years and men of at least 75.1.

到2050年，女性预期寿命将达到83.6岁，男性预期寿命至少达到75.1岁。

youdao

Guinea Bissau has Africa's second lowest rating on the U.N.'s Human Development Index measuring life expectancy,education, and standards of living.

VOA: standard.2009.04.24

Back in the 1840s, life insurance was very important because the average expectancy of life was only something like forty-five years, so that meant parents were dying left and right.

在19世纪40年代的时候,寿险是非常重要的,因为当时的人均期望寿命,仅为45岁左右,这意味着双亲平均只能活到45岁

耶鲁公开课 - 金融市场课程节选

The same nations and the short life expectancy of birth probably the lowest quality of life in other areas.

这一数字在下降，在上述国家,新生儿预期寿命较短，某些区域生活质量极低。

麻省理工公开课 - 媒体、教育、市场课程节选

In 2011, the average life expectancy of Russian males was actually 64, and Russian males last had a life expectancy of 59 or lower in 2005.

FORBES: Connect

More significantly, only 4 in 10 retirees correctly responded that about half of 65-year-old men and women can expect to live until median life expectancy indicating that the variability of life expectancy is not well understood.

FORBES: Americans Clueless About Life Expectancy, Bungling Retirement Planning

And, for the first time in the discussion of the life expectancy of NFL players, I saw myself.

CNN: Junior Seau was hurting and didn't know how to say it