搜尋結果
permafrost
- IPA[ˈpəːməfrɒst]
英式
- a thick subsurface layer of soil that remains below freezing point throughout the year, occurring chiefly in polar regions
noun: permafrost
- 釋義
名詞
- 1. a thick subsurface layer of soil that remains below freezing point throughout the year, occurring chiefly in polar regions hilly terrain underlain by permafrost