High carbon dioxide levels are associated with warm interglacial periods, and low levels with cold glacial periods.

高二氧化碳含量与温暖的间冰期有关，低二氧化碳含量与寒冷的冰期有关。

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Recent studies do in fact show that high carbon dioxide levels are associated with warm interglacial periods, and low levels with cold glacial periods.

最近的研究确实表明，高二氧化碳水平与温暖的间冰期有关，而低二氧化碳水平与寒冷的冰期有关。

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The long fur covers their whole bodies, including both their cat eyes and rabbit feet, to keep them warm in the low temperature in the Arctic.

长长的皮毛覆盖着他们的全身，包括他们猫的眼睛和兔脚，以在北极的低温下帮助他们保暖。

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Talking about how the warm winter caused low demand for natural gas, which resulted in low prices, Mr. McClendon said a warm summer would increase demand for power generation and could boost prices for natural gas.

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There was no one else in the tunnel, which was whitewashed and warm, lit by low-wattage bulbs, and branched off into small closets and locked chambers full of brooms and mops and cleaning solutions.

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When the supply runs completely dry, Herschel will warm from its ultra-low functioning temperature and go blind.

BBC: Science correspondent, BBC News