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China has reportedly built the biggest air purification tower in the world, standing at 100 metres (328 feet). 据报道，中国建造了世界上最大的空气净化站，高达100米。 This is particularly good news as China is the world's deadliest nation for outdoor air pollution, according to the World Health Organisation (WHO). 世界卫生组织说，这对中国来说尤其合适，中国是最需要治理空气污染的国家。 Another report by WHO warns that air pollution is the biggest environmental risk to health, responsible for one in nine deaths annually worldwide and killing around 3 million each year. This is only getting worse. 世界卫生组织发出警告，空气污染对健康的危害最大，全球每年死亡率达九分之一，因为空气污染死亡的人数年均三百万。而且空气污染日益严重。 | 
