glaciation
凍結成冰,冰河作用
Gla·ci·a·tion n.
1. Act of freezing.
2. That which is formed by freezing; ice.
3. The process of glaciating, or the state of being glaciated; the production of glacial phenomena.
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glaciation
n 1: the condition of being covered with glaciers or masses of
ice; the result of glacial action; "Agassiz recognized
marks of glaciation all over northern Europe"
2: the process of covering the earth with glaciers or masses of
ice