我们都知道，虽然今天的美国富有而强大，但是，美国的南部地区却是一路风雨的走过来。

As we have known so far, though we see a very rich and strong America today, that continent, especially the South, has gone through many hard times.

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而美国东南部地区正是世界上各种淡水动物物种集聚的中心，以阿巴拉契亚山脉南部山区为其中的典型。

But it is the American Southeast that stands out as a world centerof freshwater-species diversity, especially the southern AppalachianMountains.

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加拿大人和美国人争相将加拿大的水卖给美国东南部地区。

Canadian and American ones are vying to sell Canadian water to the Southwestern U. s.

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