尔伯恩;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「
冰期」，因其遗迹在加拿大南部湖北方的岩石中清晰可见。
湖；
；语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「冰期」，因其遗迹在加拿大南部湖北方的岩石中清晰可见。
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