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.