But 20th century medicine did little to increase the naturallife-spanof healthy humans.
然而，20世纪的医学对健康人的自然生命周期的增长几乎无能为力。
2
Such of words, ignore to die in what circumstance, the eyes power of god of also just it original naturallifespan.
这样的话，不管死于什么情况，死神眼看到的也只是其原本的自然寿命。
3
The process of aging and eventual death must finally be taken as the natural process of the life cycle, the old completing their limited life span and making way for the young.