随着进一步的融化、再结冰，以及上方新的降雪增加的重量，这些雪变成再次结晶阶段的颗粒状中间物，介于小薄片与冰块之间，被称作万年雪。
With further melting, refreezing, and increased weight from newer snowfall above, the snow reaches a granular recrystallized stage intermediate between flakes and ice known as firn.
他们从马车上找来任何可以用的材料搭帐篷，并杀了牛充饥。他们期盼着冰雪融化，但希望一再落空。
Building makeshift tents out of their wagons and killing their oxen for food, they hoped for a thaw that never came.
这种铅条可以融化再重复使用。
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