Their existence is now marked by the former lake bed, a flat area covering parts of North Dakota and Minnesota.

它们的存在，正标志着由前湖床，一个单位面积的部分，北达科他和明尼苏达。

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Their existence is now marked by the former lake bed, a flat area covering parts of North Dakota and Minnesota.

它们的存在，正标志着由前湖床，一个单位面积的部分，北达科他和明尼苏达。

youdao