求翻译：俄克拉荷马州位于美国南部大平原,这个大平原地跨数州,其面积约占美国本土面积的五分之一,曾被美国诗人惠特曼称为北美典型的景观。是什么意思？

Oklahoma is located in the Great Plains of the southern United States, this great plain to cross a number of states, an area accounting for about a fifth of the area of ​​the United States was U.S. poet Walt Whitman called the typical landscape of North America.

Oklahoma is located in the southern United States, and great plains to the Great Plains across several states, the size of the continental United States accounted for 5 of the United States, and has been a poet Walt Whitman called the North American landscape.

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