形象生动地描写灰霾天气答:[6] 吴兑, 吴晓京, 朱小祥. 雾和霾. 北京: 气象出版社, 2009.[7] Schichtel B A, Husar R B, Falke S R, et al. Haze trends over the United States, 1980−1995.Atmospheric Environment, 2001, 35(30): 5205−5210.[8] Martin D, Dorling S. Visibility trends in the UK 1950−1997. ...