When a river forms a loop on flat terrain, undercutting occurring on the riverbanks closest to each other can eventually connect the Banks, giving the river a shortcut.

当一条河在平原地带形成了一个圈圈，侵蚀会造成互相挨得很近的两个河岸最终连在一起，使得河流有一条捷径。

youdao

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。

youdao

For its last 600 miles the Yellow River flows eastwards through the flat, fertile, North China Plain, which is densely populated.

黄河最后的六百英里，向东流过平坦肥沃、人口密集的华北平原。

youdao

And Wind River Systems is flat to slightly lower after the company beat by a nickel its fourth-quarter figure, missed on revenues and guided below consensus for the first quarter.

FORBES: Magazine Article

At this point you will leave the flat Platte River Valley.

FORBES: How Much Should I Have Saved Toward Retirement?

Where London's topography is flat on both river banks the higher ground of North London's Primrose Hill and Hampstead are several miles from the river New York harbor is surrounded by a splendid array of varied topography, most of it now obliterated by tall buildings.

WSJ: River Romantics | The Panoramic River | Hudson River Museum | By Barrymore Laurence Scherer