出典:国際連合
The differences between the number of survivors (432-4) at different ages gives the number of deaths within the given age interval of the death function 1. Life tables typically include the expectation of life 3 or life expectancy 3 at age x ; this is the mean number of years to be lived by those surviving to exact age x, given the mortality conditions of the table. The expectation of life at birth 4 is a particular case of expectation of life, and represents the mean length of life 4 of individuals who have been subjected since birth to the mortality of the table. The reciprocal of the expectation of life at birth is the life table death rate 5 or death rate of the stationary population 5.
出典:Wiktionary
From Middle English lyftyme, equivalent to life + time. Cognate with Icelandic líftími (“lifetime”). Compare also Saterland Frisian Lieuwendstied, Dutch leeftijd and levenstijd, German Low German Levenstied, German Lebenszeit, Danish livstid, Swedish livstid.
出典:『Wiktionary』 (2012/05/09 02:19 UTC 版)
the life-span of an individual
the entirety of one's life
生前に
the life-span of an individual
実生活.
壮年期.
the noon of life
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