只是格陵兰岛融化多少冰将会使海平面上升尚不清楚，主要因为融化发生的速度比科学家曾预料的快的多。
It is unclear just how much melting ice from Greenland will push sea levels up, largely because the melting is occurring much more quickly than scientists predicted.
今年的早些时候，科学家们曾发出警告，因为较薄的“一年冰”的比例高于往常，2008年海面冰层的总量会跌至历史新低。
Earlier this year, scientists warned that sea ice volume reached a record low in 2008 due to an unusually high proportion of the thinner first year ice.
月球曾被认为很干燥，而后又有迹象显示在极地的月坑有冰。
The Moon was once thought to be dry. Then came hints of ice in the polar craters.
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