生命期望(life expectancy)是指种群中某一特定年龄的个体在未来所能存活的平均年数。 生命期望=(n时期内所有个体在未来能存活的平均时间t)/(n时期内的存活个体数) n=0时期的生命期望为该种群的平均寿命。
...e):在生态学中,指死亡表和寿命表,用于简单而直观地反应种群存活和死亡过程的统计表(百度百科)生命期望(life expectancy):种群中某一特定年龄的个体在未来所能存货的平均年数静态生命表:根据某一特定时间对种群做一年龄结构的调查资料而编制,一般用...
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在过去的4年中,老年人护理的需求增长了9%。随着对生命期望的攀升,需求还将增长更多(而工作的人口比例在缩水)。
Demand for elderly care has increased by 9% over the past four years, and it is set to rise further as life expectancy climbs (while the proportion of the population of working age shrinks).
爱,就像火苗,除非持续变动否则无法幸存,一旦停止了期望或担忧,它便停止了生命。
Love, like fire, cannot survive without continual movement, and it ceases to live as soon as it ceases to hope or fear.
这意味着,当在下游找到错误时,关键的成员不仅可用,而且他们还准备好,并且期望继续生命周期中早期开始的工作。
This means that when a problem is found downstream, the key players are not only available, they are ready and expecting to continue to contribute to work they had begun earlier in the lifecycle.
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