两年前通往加拿大北极群岛的海峡的道上满是冰层，而现在已是一片无冰水域或者只是点缀着正在融化的浮冰。
Channels through the Canadian Arctic archipelago that were choked with ice at this time of year two decades ago are now expanses of open water or vast patchworks of tiny islands of melting ice.
郝伟说，事实上，加拿大北极群岛起到了将能够毁坏船只的多年冰引入西北通道的作用。
In fact, the Canadian Arctic Archipelago acts as a "drain trap" for ship-wrecking multiyear ice, Howell says.
加德勒补充到，“它们主要来自于加拿大北极群岛、美国阿拉斯加、南美洲巴塔哥尼亚和喜马拉雅山脉的冰川，以及格陵兰和南极冰盖附近的一些小规模的冰川。”
Most of the ice loss is coming from the Canadian Arctic Archipelago, Alaska, Patagonia, the Himalayas, and the smaller ice masses surrounding the main Greenland and Antarctic ice sheets.
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