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
Don't you have any hobbies, like stamp collecting or things like that?
你有什么爱好吗？像集邮之类的爱好？
Excuse me for bothering you.
打扰了！
He had been there for nearly ten hours.
他已经在烟囱里被困了将近10个小时。