只有在全球气温变化开始和海平面反应之间的短暂滞后期间，适应气候变化的物种才能从赤道向高纬度地区迁移。

Only during the short lag between onset of global temperature change and sea level response can warm-adapted species migrate from the equator toward higher latitudes.

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从北极过去5百万年的气候变化看，它总是将全球气温变化的幅度放大。

A look at Arctic climate changes over the past 5 million years shows it always amplifies global temperatures.

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但是，全球气温变化主要在于太阳辐射量及地球对太阳辐射的反射量——这种量的变化十分微小。

But the global temperature mainly depends on how much energy the planet receives from the Sun and how much it radiates back into space-quantities that change very little.

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