When the Colorado plateau was uplifted millions of years ago, it gave the water more energy to cut back through the canyon and wear away the rocks.

几百万年前，科罗拉多高原升起使穿越谷的流更加凶猛冲击更多的岩石。

The cliffs of the Grand Canyon, which stand over 1,800 meters tall, were carved by the Colorado River, which flows across the 336,000-kilometer Colorado Plateau in the southwestern United States.

谷悬崖高1800多米，由科罗拉多冲刷而成，该贯穿美国西南部336000平方公里的科罗拉多高原。