专业八级美国人文知识的归纳,谁有啊??

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The Fall Line瀑布线：A point where water-falls or rapids suddenly drop from a higher level to the lower one.
瀑布线指的是瀑布急速地从高处向低处流泻的点。
The Appalachian Range阿巴拉契亚山脉：1200 miles long，consists of the Piedmont Plateau, Appalachian Plateaus and Appalachian Range.
阿巴拉契亚山脉全场1200英里，由皮德蒙特高原、阿巴拉契亚高原及阿巴拉契亚山脉组成。
The Cordillera Range科迪勒拉山脉：Composed of the Coast Range, the Cascades and the Rocky Mountains.
科迪勒拉山脉由海岸山脉、卡斯卡德山以及洛基山组成。
The Great Basin大盆地：The Part between the Colorado and Columbia Plateaus.
指的是科罗拉多和哥伦比亚高地之间的部分。
The Great Central Plain中部大平原：The land mass between the Rocky Mountains and the Appalachians.
指的是洛基山和阿巴拉伊亚山之间的平原。
The Great Plain大平原：The western part of the central plain.
大平原：指的是中部平原以西的部分。
The Mississippi River密西西比河：The longest, the most important river in the U.S.A. . It has a drainage