arctic sea-ice

基本解释

Arctic sea-ice cover reached its lowest ever recorded average level for the month of June.
六月，北极海冰的覆盖面积达到历史平均记录的最低点。
Figure 2: Distribution of record minima and record maxima of Arctic sea-ice extent (NSIDC).
图表2：北极海冰范围最大记录值和最小记录值分布图。
Figure 1: Evolution of Arctic sea-ice extent in July and August from 1979 until 2011. (NSIDC)
图表1：从1979年到2011年七月至八月的海冰变化

The two government agencies have been studying Arctic Sea ice from space since nineteen seventy-nine.

It is widely expected Arctic sea-ice will be totally lost in summer with a few years to a decade or so, perhaps at less than 1C or warming.
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