They build their nests on flat surfaces of the canyon walls.

他们在峡谷壁的平坦面上筑巢。

Over 1 million cubic meters of loose rock needed to be cleared from the canyon walls.

峡谷壁上有超过一百万立方公尺的松散岩石需要清除。

More than 300 years later, they climbed down the canyon walls and began building cliff dwellings.

300多年后，他们爬下峡谷的墙壁，开始建造悬崖住宅。

The singer can be seen walking on plant life and bathing in the cold river underneath the canyon's walls.

视频中可以看到这位歌手漫步在植物中，在峡谷壁下的冰冷河流中沐浴。

Ibex dominate the canyon walls in the Dead Sea region.

野山羊在死海地区的峡谷壁上占主导地位。

Finally, in about 1100, they climbed down the canyon walls and began building cliff dwellings.

最后，大约在 1100 年， 他们爬下峡谷壁， 开始建造悬崖住宅。

Just 250 million years ago, the youngest layer in the canyon's walls was laid down.

就在 2.5 亿年前，峡谷壁上最年轻的岩层形成了。

This design curves upstream, using the force of oncoming water to push the structure into its supports — in this case, the canyon walls.

这个设计让上游形成曲线，用迎面而来的水所产生的力量，将该建物推入它的支撑物当中，在此，支撑物就是峡谷壁。

The canyon walls were adorned with corals of every imaginable color, their delicate branches swaying gently in the current.

峡谷壁上点缀着各种颜色的珊瑚，它们纤细的枝条在水流中轻轻摇曳。

The route has footbridges, some of them a meter long, hanging from the canyon walls But don't worry, all of these walkways have been restored!

这条路线有人行天桥， 其中一些长一米，悬挂在峡谷壁上 但别担心，所有这些人行道都已修复！

Just a five-minute drive into the park, pull into the Park Avenue Trailhead, and mosey beneath the shadows of towering canyon walls, which evoke the early skyscrapers of New York City.

驶进公园只需要五分钟，就驶入了公园大道步道，在高耸的峡谷壁的阴影下漫步，那让人想起纽约市早期的摩天大楼。

Men known as high skaters clamored along the cliffs at the river's edge and then dangled down hundreds of feet on ropes to drill holes for dynamite that blasted away the canyon walls.

被称为高滑手的人在河边的悬崖上吵闹，然后在数百英尺的绳索上晃来晃去为炸药钻孔，炸毁了峡谷的墙壁。

I didn't know what a proton was, or a protein, didn't know a quark from a quasar, didn't understand how geologists could look at a layer of rock on a canyon wall and tell you how old it was, didn't know anything really.

我不知道什么是质子，什么是蛋白质，不知道夸克和类星体有什么区别，不理解地质学家怎么只要看一眼峡谷壁上的一层岩石，就能说出它的年龄--我确实什么也不知道。