India accounts for seven of the world's 10 cities with the worst air pollution, according to a new report, but previously smogbound Chinese cities have seen a marked improvement.
원문출처 : https://www.cnn.com/2019/03/04/health/most-polluted-cities-india-china-intl/index.html
원문출처 : https://www.cnn.com/2019/03/04/health/most-polluted-cities-india-china-intl/index.html