清晨應是空氣較清新的時刻,但空汙嚴重的北京,居民們要換上口罩才能外出。Feng Li/Getty Images
Feng Li/Getty Images
Feng Li/Getty Images
口罩不夠用,有些居民直接換上更能擋去灰塵的塑膠口罩。Feng Li/Getty Images
Feng Li/Getty Images
奧運「鳥巢」也籠罩在霧濛濛的空汙中。Feng Li/Getty Images
Feng Li/Getty Images
天安門廣場上的小朋友們,手拿旗幟,有些也戴上卡通口罩。Feng Li/Getty Images
Feng Li/Getty Images
Feng Li/Getty Images
Feng Li/Getty Images
Feng Li/Getty Images