permafrost
permafrost 英 ['pɜːməfrɒst] 美 ['pɝməfrɔst]
n. 多年冻土；永久冻结带；永久冰冻
名词复数:permafrosts
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- n. 多年冻土；永久冻结带；永久冰冻
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1. Yakutsk is the largest city in the world built on permafrost – soil that remains permanently frozen year round.
雅库茨克是世界上建设在永久冻土上最大的城市——土壤在全年都保持冰冻。
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2. Other positive climate feedbacks that operate in the Arctic include the thawing of permafrost and vegetation changes.
在北极发生的其它气候正反馈还包括永久冻土融化和植被变化。
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3. During warming, the gas burped into the atmosphere from natural reservoirs, or "carbon sinks", such as permafrost and the oceans.
在变暖过程中，这种气体从大自然储库或“碳吸存”（比如永久冻土和海洋）中涌入大气。
- permafrost (n.) 1943, coined in English by Russian-born U.S. geologist Siemon W. Muller (1900-1970) from perm(anent) frost.
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