urban atmosphere

• 城市大气

urban atmosphere的用法和样例：

例句

1. The air pollution in the urban area is still serious.
   城市大气污染仍然较重。
2. The systemic research of toxic organic compounds and organic molecular tracers are significantly important for treatment and control of urban air pollution.
   开展有毒有害有机物及不同污染源有机示踪化合物的系统研究，对城市大气污染的治理具有重要的意义。