英语词汇“active permafrost”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	active permafrost
释义	active permafrost active permafrost [′ak·tiv ′pər·mə‚frȯst] (geology) Permanently frozen ground (permafrost) which, after thawing by artificial or unusual natural means, reverts to permafrost under normal climatic conditions.
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