They are called "prairie" houses, after the flat expanses of land between the Mississippi River and the Rocky Mountains.
这些房子被称为“大草原”住宅，这个名字源自于密西西比河及洛矶山脉两地之间的平坦、广阔的土地。
2
He pointed south across the Yellowstone River valley to a tiny dot of willow and aspen that seemed to explode in brilliant yellows against the backdrop of prairie tans and grays.
他又指着黄石河谷的南边，那里隐约能看到柳树和山杨，就好像在一片灰褐色中绽出的一点亮黄。
3
There was a den near the river, he said wistfully, and they'd migrate six miles up to a nice patch of open prairie full of gophers.