Permafrost
n. [地]永久冻结带
📖 牛津释义
permafrost
n[U]
subsoil that is permanently frozen, eg in polar regions 永冻土, 永冻层（如在极地的）.
🗣️ 情景例句
Sounds good. I'll be there at 7.
很好。我7点会到。
I've asked Mr. Lee for his guidance in conducting myself here.
我让李先生指导我在这里如何立身处世。
There's nothing much I can do.
这事情我无能为力。