柯林斯詞典glaciation /?ɡle?s??e???n/ (glaciations) 1. N-VAR In geology, glaciation is the process by which the land is covered by glaciers. Glaciations are periods when this happens. 冰蝕期[技術(shù)] 返回 glaciation劍橋詞典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、存在和移動(dòng)） This landscape shows many clear features of glaciation. 這里的景觀有很多明顯的冰河作用的特征。 返回 glaciation