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。

She thinks if I cut the rock loose, I'll go... fuuuuu!

她觉得如果我把石头扔了 我就能！

Hans and his comrades, seated upon loose lava rocks, looked at him with asmuch wonder as they knew how to express, and perhaps taking him for an escaped lunatic.

汉斯和他的战友坐在松散的熔岩上，用他们知道如何表达的惊奇看着他，也许把他当作一个逃跑的疯子。

Only skilled mountaineers are able to detect the marks that serve to guide the Indians, such as slight abrasions of the looser rocks, the displacement of stones here and there, and bent bushes and weeds.

只有技术娴熟的登山者才能发现为印第安人提供指引的标记，例如松散岩石的轻微磨损、各处石头的位移以及弯曲的灌木和杂草。