Environmental groups now have a very good chance of forcing the removal of two major dams, the Glen Canyon Dam on the Colorado and the Hetch Hetchy Dam in Yosemite.

环保组织现在很可能会强制拆除掉两座重要大坝——科罗拉多的格伦峡谷大坝和约塞米蒂的赫奇赫奇大坝。

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Two geologists discovered that about half of the sand from the Grand Canyon was actually once part of the Appalachian Mountains.

两位地质学家发现，约半数的来自大峡谷的沙子实际上曾经是阿巴拉契亚山脉的一部分。

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Two more shots that show Colorado's Rocky Mountains inside the canyon.

这是科罗拉多落基山脉峡谷里的两张照片。

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The walls of Black Canyon rise almost two hundred forty-three meters above the river.

VOA: special.2009.08.12

From the canyon floor it reaches two hundred twenty-one meters high.

VOA: special.2009.08.12

Interior Secretary Ken Salazar called for a two-year hold on mining near the Grand Canyon.

WHITEHOUSE: Around Town

For the last two years there has been a Grand Canyon-size gap between facts and fear.

FORBES: Joe the Dumber

Short story about two neighbors in a California canyon, a thirteen-year-old boy, Dill, who lives with his mother, and a Japanese man, Sanjuro, who lives with his wife.

NEWYORKER: Ash Monday