permafrost
noun /ˈpɜːməfrɒst/
/ˈpɜːrməfrɔːst/
[uncountable] (specialist)- a layer of soil that is permanently frozen, in very cold regions of the world
(寒带)永久冻土,永冻土,多年冻土 词源1940s: from permanent + frost.
词汇 | permafrost |
释义 | permafrostnoun /ˈpɜːməfrɒst/ /ˈpɜːrməfrɔːst/ [uncountable] (specialist)
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