Scientistssay man-made climate change does have the potential to cause more frequent and more severe weather extremes, such as heat waves, storms, floods, droughts and even cold spells.

科学家说，人为的气候变化的确会带来更为频繁和更严重的极端天气，如热浪、暴风雨、洪水、干旱甚至持续的寒冷天气。

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He said that since October, more than 300 staff and over 130 gritters have been salting main roads during the cold spells.

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There have been a number of areas in England which have had qualifying cold spells, including Bingley, Sheffield, Norwich, Nottingham, Bedford and High Wycombe.

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In the weather, we see this sort of behavior with extended heat waves, cold spells, or periods when it is hot in the morning followed by an afternoon thunderstorm.

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