The biggest change is occurring in inland regions such as the Central Valley.

其中变化最大的是中央山谷地区。

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The Central Valley is already one of the poorest regions of the country. And its population, about 6.7m in 2008, is among the fastest-growing;

中央谷已经是全美最贫穷的地区之一，其人口2008年达到约670万，是人口增长最快的地区之一。

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The Central Valley is already one of the poorest regions of the country. And its population, about 6.7m in 2008, is among the fastest-growing;

中央谷已经是全美最贫穷的地区之一，其人口2008年达到约670万，是人口增长最快的地区之一。

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