The number of people aged 80 and older is growing at a faster rate than any other age group worldwide.

在全球范围内，处于80岁以上(包括80岁)年龄层的人口的数量增长速度超过其他任何一个年龄层的人口的增长速度。

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As almost everybody lives ever longer, a reasonable supply of young people is needed to counterbalance-and fund the pensions of-a growing number of older folk.

现在几乎所有人都寿命更长，故需足够多的年轻人以达到平衡，为数量不断增加的老人一族提供养老金的资金。

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Because women tend to live on average six to eight years longer than men, they represent a growing proportion of all older people.

由于女性平均寿命通常比男性长六到八年，所以她们在老年人口中的比例越来越高。

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Now,the fastest growing group of users are people thirty-five and older.

VOA: special.2009.09.14

Fast-growing Winston soon surrounded the much older town of Salem, so in 1913,people in the area voted to combine them into a single place.

VOA: standard.2010.03.18

Still, in the past two or three years he has treated a growing number of older people for heart attacks suffered while dancing.

WSJ: Not Content to Sit on Porch, Florida Retirees Rock On

This age group is growing the fastest because older people tend to be latecomers to Facebook.

NPR: As Facebook Matures, Is It Losing Its Edge?

The number of older people worldwide is growing faster than any other age group.

BBC: UN warns over impact of rapidly ageing populations