Indoor pollution, which includes sources like home heating and cooking, has remained constant over the past several decades despite advances in the area.

在过去几十年中，来源于诸如家庭供暖和烹饪等的室内污染持续存在，尽管在这方面已经有所改进。

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We'll now look at another ceramic which is made from mixing sand with minerals and heating to over 600 degrees Celsius.

现在我们来看看另一种陶瓷，它是由沙子和矿物质混合，再加热到600多摄氏度制成的。

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Over-heating because of the extra warmth generated by sleeping beside another person may be just as blame worthy for a sleep-deprived night as other factors.

睡在他人身侧会带来额外的热量，由此造成的身体过热跟其他一些因素一样是无眠之夜的罪魁祸首。

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John Morris, of Birmingham Airport, said the airport had the capacity for another nine million passengers and added that the South East's runways were "over heating".

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The fire service says candles, cigarettes, objects left to close too fires, pans over heating and a high number of student houses with no smoke alarm - or no battery in the alarm - are often to blame for fire outbreaks.

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House-builders and employers are pressing for more houses, and the over-heating housing market seems to support their case.

ECONOMIST: The south-east