A broad valley opened up leading to a high, flat plateau of cultivated land.
一个宽阔的山谷展开,通向一片平坦的高原耕地。
《柯林斯英汉双解大词典》
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However, plate tectonics cannot fully explain certain massive surface features, such as the "superswell" of southern Africa, a vast plateau over 1,000 miles across and nearly a mile high.
In addition, the high desert plateau of southwest Colorado is one of the sunniest spots in the nation, providing solar radiation that accelerates algae growth.