life expectancy
柯林斯词典
1. N-UNCOUNT The life expectancy of a person, animal, or plant is the length of time that they are normally likely to live. 平均期望寿命[also N in pl]
The average life expectancy was 40. 平均期望寿命曾是40岁。
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life expectancy (life expectancies)
剑桥词典
- the length of time that a living thing, especially a human being, is likely to live
（尤指人的）预期寿命
Life expectancy in Europe increased greatly in the 20th century . 欧洲人的预期寿命在20世纪大幅增长。 返回 life expectancy