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It frequently contributes to the smogs over los angeles .

同时它也常常引起洛杉矶上空的烟雾。

Along with a proposed environmental tax , this is likely to add to the costs of industry , but it should mean that china 's notorious smogs finally start to dissipate .

伴随环境税的征收，中国工业的成本必然提高，但这意味着中国声名狼藉的烟雾终于开始慢慢消散。

The promise of more transparency has been welcomed as an important step towards a clear-up of the foul smogs that plague urban china , but environment officials stress that more time is needed to turn grey skies to blue .

人们欢迎这种更加透明的保证，认为这是朝着净化困扰中国城市地区的有毒烟雾迈出的重要一步，但是环境专家强调，要使灰色的天空变为蓝色则需要更长的时间。