With additional time, pressure, and refrozen meltwater from above, the small firn granules become larger, interlocked crystals of blue glacialice.
随着时间的推移，压力的增加，再加上从上方重新冻结的融水，小冰原颗粒成为相互锁结的大晶体蓝色冰川冰。
2
The oxygen isotope ratio of the ocean changes as a great deal of water is withdrawn from it by evaporation and is precipitated as snow to form glacialice.
随着大量的水通过蒸发被抽离，并以雪的形式沉淀形成冰川冰，海洋中氧同位素的比率就发生了变化。
3
A surplus allows snow to accumulate and for the pressure of snow accumulated over the years to transform buried snow into glacialice with a depth great enough for the ice to flow.