permafrost

• Существительное, обозначающее грунт, обычно в полярных или высокогорных регионах, который остается при температуре замерзания или ниже неё как минимум два года подряд.

A noun referring to ground, typically in polar or high-altitude regions, that remains at or below freezing point for at least two consecutive years.

неисчисляемое

1. Permanently frozen groundB2formalscientific

   A layer of soil or rock that remains at or below freezing point for at least two consecutive years, typically found in polar regions.

   Вечная мерзлота

   • Climate change is causing permafrost to thaw at an alarming rate.
   • Buildings in Siberia are specially designed to withstand the shifting permafrost.
   • Scientists study permafrost to understand ancient climate conditions.