life-time expectancy
终生期望
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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However, that comparison omits other relevant factors: leisure time, life expectancy, and economic inequality.
然而，这种比较忽略了其他相关因素：闲暇时间、预期寿命和经济不平等。
Yet with the passage of time, life expectancy grew, the health of 60-year olds improved and the system evolved into one that literally subsidized retirement.
FORBES: Why Does The Federal Government Subsidize Retirement?
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