Sea ice retreat and snow melt reduce Earth's albedo, which can lead to increased warmth and further melting.

海冰的消退以及冰雪的融化降低了地球的反照率，这将导致温度继续增高冰雪继续消融。

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And in the Arctic, an extraordinary summer retreat of sea ice in 2007 has been followed by less substantial losses and projections by some researchers of a possible, if temporary, recovery.

在北极，2007年出现了不同寻常的夏季海冰消退现象，随后情况有所好转，一些研究人员预测如果这种情况只是临时的，还是有恢复的可能的。

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One requirement for the success of this deal: a further retreat of Arctic sea ice.

协议的顺利达成有一个必要条件：北极海冰的进一步减少。

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And elsewhere the retreat of the sea ice is already a factor in new exploration.

ECONOMIST: Resources: Hidden treasure | The

Heartened by his encounters with groups of businessmen, Abdullah called 150 members of the private sector and government together for a two-day retreat at the Dead Sea in November 1999.

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The best hope lies in trying to identify the broader changes under way - for example with the retreat of the Arctic sea-ice or the cycle of warming in the Pacific Ocean with El Nino and La Nina.

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