Now, to look at the slope, it was hard to believe that they had done it all.

现在，看看这个山坡，你很难相信，这一切都是他们两个人完成的。

Paul aimed it at the slope, spread a low dike there, began kicking away the sand beneath it, immobilizing the opened face with more foam.

保罗把它对准斜坡，在那里铺了一个低堤，开始踢开它下面的沙子，用更多的泡沫固定打开的面。

Over millions of years, freeze-thaw cycles pry at these cracks, while winds claw at the slopes and streams and glaciers carve deep valleys into the mountainside, all weakening the mountain's support, this can end badly.

数百万年冻融循环撬开的这些裂缝，山坡上的强风还有激流和冰川在山腰上雕刻的深谷，这些都弱化了山的支撑，结局可能十分糟糕。