结论：美国人口统计上的变化，将导致未来20年里癌症确诊人数的显著增加。

Conclusion Demographic changes in the United States will result in a marked increase in the number of cancer diagnoses over the next 20 years.

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美国人口统计局估测，截止2008年，最新数据显示人口已回升到336644人。

The U.S. Census Bureau estimated that the population had risen back to 336, 644 by 2008, the latest available data.

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美国人口统计局预计在未来四十年内，美国的人口会增长40%，增量相当于整个日本的人口数量。

The Census Bureau expects the population to grow by 40% over the next four decades, equivalent to the entire population of Japan.

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