As the average age of the population increases, there are more and more old people to care for.
随着人口平均年龄的增长，有越来越多的老年人需要照顾。
One is that the heritability of IQ rises with age--that is to say, the extent to which genetics accounts for differences in IQ among individuals increases as people get older.
首先，IQ的遗传特征竟然会随年龄的增长而表现得更明显，也就是说，随着人们年龄的增长，IQ的差异由遗传决定的程度竟逐渐提高。
The cuts are disguised as increases in the minimum retirement age or as increases in the age at which full pensions will be paid.
这种削减被装扮成把最低的退休年龄提高或者把支付全部退休金的年龄提高。
As societies grow richer, and start to move from high fertility to low, the size of their working-age population increases.
随着一个社会拥有的财富增多，其生育率就会由高转低，而其处于工作年龄的人口则会增加。
This type of "late retirement" is more frequent now as population growth in the United States slows down, and the average age of the citizens increases.
由于美国的人口增长越来越慢，而国民的平均年龄越来越高，这种“晚退休”的情况现在更加普遍。
Gerontologists have found that the influence of environmental factors such as wealth or education on lifespan fades as we age, while that of genes increases.
老年医学专家已经发现环境因素如财富和教育对寿命长度的影响在我们变老的时候就消退了，而基因的影响却在增加。
As a result, the average age of a physicist increases 8 months per year, meaning that there is very little new hiring.
因此，物理学家的平均年龄每年计算结果差不多增加八个月-即将近一年或很少有新录用。
As our population grows, both in number and age, the number of presbyopic patients desiring contact lenses increases with each passing year.
随着我国人口的增长，无论在数量和年龄，渴望隐形眼镜逐年增加老花眼患者人数。
After even the most joyous childhood, happiness typically declines in the teens through the early 20s, but, believe it or not, increases as we age.
在 人生的头20年中，度过即便是最快乐的童年后，十几岁时，快乐会明显的减少。
After even the most joyous childhood, happiness typically declines in the teens through the early 20s, but, believe it or not, increases as we age.
在 人生的头20年中，度过即便是最快乐的童年后，十几岁时，快乐会明显的减少。
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