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Ice cores contain evidence that sudden cold periods occurred after the North Atlantic became less salty, perhaps because freshwater lakes burst through the walls of glaciers and found their way to the sea. |
中文意思: 冰心内的证据显示,北大西洋水体盐度降低后骤冷时期才开始,这或许是由于淡水湖的水冲破冰河筑成的屏障流入海中所致。 |
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