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"Agassiz recognized marks of glaciation all over northern Europe"
以上来源于: WordNet
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]
The problem with ascribing all tillites to glaciation, however, is that tillite deposits are widespread in Precambrian sediments.
然而,使所有的黑土形成冰川作用的问题是,在前寒武纪沉积物中广泛分布有黑土。
An increasingly attractive theory holds that decreases in atmospheric carbon dioxide start the cooling trend that leads to glaciation.
一个越来越有吸引力的理论认为,大气中二氧化碳的减少引发降温趋势,这趋势导致冰川作用。
These hills were formed by glaciation.
这些山丘是冰川作用形成的。
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