柯林斯词典glaciation /ˌɡleɪsɪˈeɪʃən/ (glaciations) 1. N-VAR In geology, glaciation is the process by which the land is covered by glaciers. Glaciations are periods when this happens. 冰蚀期[技术] 返回 glaciation剑桥词典the forming , existence , or movement of glaciers over the surface of the earth 冰河作用（地球表面的冰河形成、存在和移动） This landscape shows many clear features of glaciation. 这里的景观有很多明显的冰河作用的特征。 返回 glaciation