如果这种变暖发生，两极的冰帽将开始融化，从而使海平面上升数米，并严重淹没沿海城市。

If this warming up took place, the ice caps in the poles would begin to melt, thus raising sea level several metres and severely flooding coastal cities.

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他们平衡的平面，由一小群人的集合，或者他们所谓的流量数。

Their balanced sheet consists of small collections of people or what they call traffic counts.

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他还认为，有关北极海冰、海平面图和气温上升之间的相互作用还存在许多未知数。

He also argued that much remains unknown about the interaction between Arctic sea ice, sea level, and temperature rise.

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