Beijing made a breakthrough in its air pollution treatment as the city reached the national air quality standard, local authorities said Tuesday.

当地政府周二表示，北京在空气污染治理方面取得了突破，该市达到了国家空气质量标准。

At the Council on Energy, Environment and Water, my colleagues find that today, one in two Indians is breathing air that does not meet our air quality standards.

在能源、环境和水资源委员会， 我的同事们发现，如今，每两个印度人中就有一个呼吸着不符合我们空气质量标准的空气。