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| Subject | English | Russian |
| Makarov. | end of the period characterized by permanent snow cover | завершение периода залегания снежного покрова |
| geogr. | number of days without permanent snow cover | число дней отсутствия устойчивого снежного покрова (As the number of days without permanent snow cover increased, the proportion of white weasels dropped precipitously – by Ben Guarino, The Washington Post Tamerlane) |
| hydrol. | permanent snow cover | "вечный" снег |