冻土层 dòng tǔ céng

DEFINITIONS

  1. permafrost
  2. tundra
  3. layer of frozen soil

CHARACTERS

冻 dòng
HSK 5
freeze; cold, congeal; jelly
土 tǔ
HSK 5
soil, earth; items made of earth
层 céng
HSK 3
story, layer, floor, stratum