每日雅思词汇：雾霾天气　　雾霾haze; 　　烟雾smog; 　　空气污染指数air pollution index; 　　橙遥预警orange alert; 　　悬浮颗粒物airborne particulate matter; 　　可吸入颗粒物inhalable particle; 　　有遥物质toxic substance; 　　空气质量检测air quality monitoring; 　　实时发布PM2.
5数据release real-time PM2.
5 data