noun 下载 🔗分享 冰穴,冰川竖井。 A cylindrical, vertical shaft that extends through a glacier and is carved by meltwater from the glacier’s surface. Examples : "The rushing meltwater disappeared down the moulin, a deep hole in the glacier's icy surface. " 奔涌的融水消失在冰穴里,那是一个冰川表面上的深洞。 geology environment geography nature 与AI对话词汇游戏阅读练习