冰川谷;冰蚀谷;冰蚀河谷
However, during the Pleistocene glacial epoch, the melting water of the Pleistocene glaciers could form some small scale karst caves along the margin of the glacial valley in the limestone mountains.
更新世冰期在灰岩山地冰川槽谷的边缘,冰川融水作用亦可发育小型洞穴。
英语网 · 双语娱乐资讯
英语网 · 初中英语语法
英语网 · 外贸英语