firn
n.（名词）Granular, partially consolidated snow that has passed through one summer melt season but is not yet glacial ice.Also called old snow 粒雪，万年雪：经过一个夏季的溶化期但仍未成冰川的粒状且部分沉固的雪也作 old snow
来源：German 德语 from German dialectal [of last year] 源自 德语方言 [去年的] from Old High German firni [old] 源自 古高地德语 firni [旧的，老的]
