Acid rain and old age explain the shortage of capacity.

酸雨和设备老化是电量短缺的两个主要原因。

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It's the perfect lining portrait of childhood and old age, of Europe and Asia.

这是一组活的肖像画，是老人和孩子、亚洲和欧洲的肖像画。

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Younger people, those aged 15 to 24, thought youth ended at just 28 and old age began at 54.

年龄在15岁到24岁之间的年轻人认为青年时期在28岁时结束，老年时期从54岁开始。

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And the experts say the average age of people found to have the disease is between 20 and 50 years old.

VOA: special.2009.01.06

Contrast Yeats's old age and the freshness of his desire in this poem.

在这首诗里对比叶芝的年纪,和他愿望的朝气。

耶鲁公开课 - 现代诗歌课程节选

So people were dying of old age and that was really heart disease that was killing them they just didn't know, so it's multi-factorial and we'll talk about that.

老死的人实际是死于心脏病,只不过人们不知道这一点罢了,这是个多因素的问题,我们以后会进一步探讨

耶鲁公开课 - 生物医学工程探索课程节选

Washington subsidizes single parenthood while reorienting retirement and old age care away from a multi-generational continuity.

FORBES: Congress's Policies Steal Our Freedoms While Rewarding Irresponsibility

As she ventures from childhood to adulthood and old age, the song becomes more complex as it moves along.

NPR: Priscilla Ahn: A Life in 'Dream'

Another finding is that people tend to retain a similar "rank order" in intelligence level between childhood and old age.

WSJ: Intelligence Changes Linked to Genes