الوده ترین شهرهای جهان فارسی

What Are The World'd Cleanest Cities? https://www.seevid.ir/fa/w/YSew_OnDEFE Subscribe! http://bitly.com/1iLOHml With rapid urbanization, air pollution has become an important health issue for many cities. So what are the most polluted cities? Learn More: Daily Mail: Nearly HALF of Delhi's children suffer 'severe' lung problems due to air pollution http://www.dailymail.co.uk/indiahome/indianews/article-3067818/Nearly-HALF-Delhi-s-children-suffer-severe-lung-problems-air-pol

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