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permafrost

US [ˈpɜrməˌfrɔst]
UK [ˈpɜː(r)məˌfrɒst]
  • n.多年冻土
  • Web永冻层;永久冻土;永冻土
permafrost
n.
1.
(寒带)永久冻土,永冻土,多年冻土a layer of soil that is permanently frozen, in very cold regions of the world

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Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard
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