Air pollution in Beijing has been declared the worst in the world. Each year hundreds of thousands of Chinese die from thick clouds of smog.
Air pollution in Beijing has been declared the worst in the world. Each year hundreds of thousands of Chinese die from thick clouds of smog.
在北京的空气污染，已经被宣布为是全世界最严重的。每年有成千上万的人死于浓重的烟雾云。