a vertical wedge-shaped mass of ice in the soil of a permafrost region; (also) a crack or fissure in the earth resulting from the formation of…
an underground mass of ice in a region of permafrost which tends to increase in size and thrust up the overlying soil forming a mound; a mound so…
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。