They're going to have to move up slope, and they may eventually lose habitat entirely.

他们将不得不爬上斜坡，最终可能会完全失去栖息地。

Men disappeared into crevasses, went snowblind, and struggled up slopes that were twice as steep as promised.

男人们消失在裂缝中，变得雪盲，并且挣扎着爬上两倍于承诺的陡峭的斜坡。