近70年来工人的实际工资平均增长超过了十倍。
The real wage of the average worker has increased by a factor of over ten in the last 70 years.
在其至少十年来平均每年的人口增长超60万的加州,人们正在建设更多的住宅。
In California, where population growth has averaged more than 600,000 a year for at least a decade, more residential housing is being built.
过去几十年来,初婚的平均年龄一直在稳步上升。
The average age of first marriage has risen steadily for decades.
We could have gone on and studied the average at-risk population for decades and centuries.
我们本可以继续研究几百年来的,平均受危人群。
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