永凍土

永冻土
yǒngdòngtǔ
permafrost

CEDICT

Entry Composition

1 永 yǒng
  1. forever
  2. always
  3. perpetual
2 凍土 dòngtǔ
  1. frozen earth
  2. permafrost
  3. tundra

Related entries

凍土層 dòngtǔcéng
  1. permafrost
  2. tundra
  3. layer of frozen soil
永久凍土 yǒngjiǔdòngtǔ permafrost
凍土 dòngtǔ
  1. frozen earth
  2. permafrost
  3. tundra
地球表面的五分之一被冻土覆盖了。

One fifth of the earth's surface is covered by permafrost.

Source: Tatoeba