He got on a snow slope that suddenly started to move.There was nothing I could do.It was a sheer drop of nearly a thousand feet to the Magdelena,and I saw him go over in a flurry of snow.

• 突然，他脚下的一个雪坡开始滑动，接着积雪从几千英尺高的山顶上滚下，而我只能站在那儿，眼睁睁地看着他被雪崩卷走了。