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| French | English |
| pergélisol résiduel | relic permafrost |
| pergélisol stable au dégel | thaw-stable permafrost |
| pergélisol stratifié | layered permafrost |
| zone à pergélisol | permafrost area |
| écosystème du pergélisol | permafrost ecosystem The interacting system of the biological communities and their nonliving environmental surroundings in a climatic region where the subsoil is perennially frozen |
| écosystème du pergélisol | permafrost ecosystem |