As the Arctic ice pack spread southward, Norse voyages to the west were rerouted into the open Atlantic, then ended altogether.

由于北极的大片浮冰向南移动，挪威人的航行路线由向西航行改成了向开阔的大西洋航行，后来向西的航行整个都终止了。

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Icebergs are created when chunks of pack ice break free and float off into open sea.

当大块积冰断裂、漂浮至远海的时候，冰山就形成了。

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