| 单词 | firn | 
| 释义 | firn   (fîrn) n.  Granular, partially consolidated snow that has passed through one summer melt season but is not yet glacial ice. Also called  old snow. [German, from German dialectal (Alemannic), of last year, from Old High German firni, old; see  per1 in the Appendix of Indo-European roots.] | 
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