permafrost

'pә:mәfrɔ(:)st

n. ground that is permanently frozen

n. [地]永久冻结带

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BNC 频率

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使用频率

permafrost 由 perma-（永久）和 frost（霜冻）组成，意指“永久冻土”，可以帮助记忆其含义。

例句

1. The permafrost in Alaska is melting due to climate change.

阿拉斯加的永久冻土因气候变化而在融化。

2. Scientists study permafrost to understand its impact on the environment.

科学家研究永久冻土，以了解其对环境的影响。

3. Many buildings in northern regions are built on permafrost to prevent damage.

北方地区的许多建筑是建立在永久冻土上，以防止损坏。