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Air quality in New Delhi will deteriorate to "severe" levels this week when Indians set off firecrackers to celebrate the Hindu festival of lights, a government scientist said, leaving many at risk of respiratory problems 印度人民为庆祝排灯节纷纷燃放烟花爆竹，这种习俗让新德里的空气遭受污染，达到“严重级别”。一名政府科学家说，这会增加民众患呼吸道疾病的危险。 The warning, based for the first time on India's newly launched national Air Quality Index, is significant as New Delhi dismissed a World Health Organization study in May which found the capital to have the world's worst air pollution. 今年五月在世界卫生组织的一项全球城市空气质量的调查中，新德里空气污染程度位居首位，但印度政府对此并不接受，并制定了印度新版全国空气质量指数。 The study, which covered 1,600 cities, also said that India has 13 of the 20 cities with the worst air quality worldwide. 世卫组织的这项调查中包括了1600个城市，其中有13个印度城市“入围”全球空气质量最差城市前20名。 "Delhiites are going to breathe very poor-to-severe air at least for two days," said Gufran Beig, chief scientist at the Indian Institute of Tropical Meteorology, referring to Thursday, when the nation celebrates Diwali, and a day after. “新德里的居民还将继续忍受这样的空气，至少还得两天。”印度热带气象研究所的首席科学家古夫兰·贝格在上周排灯节庆祝期间说。 | 
