A region of the north-central United States around the Great Lakes and the upper Mississippi Valley.

美国中北部五大湖区及密西西比河上游河谷周围的地区。

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A region of the north-central United States around the Great Lakes and the upper Mississippi Valley.

美国中北部五大湖区及密西西比河上游河谷周围的地区。

youdao