The Colorado River flows through the Grand Canyon. The Canyon offers a lot of information about the physical history of Earth.
科罗拉多河流经大峡谷，大峡谷向我们提供了许多有关地球自然历史的信息。
The Colorado River flows through the Grand Canyon. The Canyon offers a lot of information about the physical history of Earth.
科罗拉多河流经大峡谷，大峡谷向我们提供了许多有关地球自然历史的信息。
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