glaciations were approximately synchronous in both hemispheres.
冰河作约是同时发生的。
glaciations were approximately synchronous in both hemispheres.
冰河作约是同时发生的。
It has unique evidence of glaciation during the Quaternary Period and is the birthplace of China's glaciological theory.
宋代理学师朱熹此提出的教育思想成为中国古代教育的准则,世界教育史上也有重要影响。
The first of these glacial periods is often called the Huronian glaciation because it is well exposed in rocks just north of Lake Huron in southern Canada.
第一次冰期称为「休伦冰期」,因其遗迹加拿南部休伦湖北方的岩石中清晰可见。
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