It is true that the average temperature rise is only about two degrees, but that has been enough to start the glaciers receding in many parts of the world.

确实，平均气温升高仅二度左右，但这已足以引起世界上许多地区冰川的消退。

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Mayor Bloomberg said the storm surge had surpassed the highest forecast, but he expected waters to start receding.

BBC: Sandy: Storm-hit New York declared major disaster area

New York Mayor Michael Bloomberg said the storm surge was higher than the highest forecast, but he expected the waters to start receding from midnight local time.

BBC: Storm Sandy causes severe flooding in eastern US