这种物质覆盖的区域十分巨大，因此使其沉积下来的冰一定是比格陵兰岛或南极洲更大的大陆冰川。
The areas covered by this material were so vast that the ice that deposited it must have been a continental glacier larger than Greenland or Antarctica.
格陵兰和南极洲为大陆冰川所覆盖。大陆冰川靠海洋的边缘部分发生破裂，变成漂浮在海洋中的冰山。
Greenland and Antarctica are covered by continental glaciers. Pieces at the ocean edge of a continental glacier break off and become icebergs floating on the ocean.
格陵兰和南极洲为大陆冰川所覆盖。大陆冰川靠海洋的边缘部分发生破裂，变成漂浮在海洋中的冰山。
Greenland and Antarctica are covered by continental glaciers. Pieces at the ocean edge of a continental glacier break off and become icebergs floating on the ocean.
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