2月17日，北京首都机场被大雾笼罩。当日清晨，北京、天津、河北、河南、山东、广西等地发布大雾预警。北京部分地区能见度不足500米，空气质量为中度或重度污染。截至17日8时，受雾霾天气影响，山东、河北、天津、北京境内局部路段通行受阻。新华社发（马儒壮 摄） On February 17,,Beijing capital airport is heavy fog shrouded.That day in the morning,Beijing/tianjin/hebei/henan/shandong/Guangxi fog warning issued.Parts of Beijing visibility of less than 500 meters,Air quality is moderate or severe pollution.At 17, 8,By fog haze weather,shandong/hebei/tianjin/Beijing domestic local road traffic hindered.The xinhua news agency hair(MaRuZhuang perturbation)

    2月17日，北京首都机场被大雾笼罩。新华社发（马儒壮 摄） On February 17,,Beijing capital airport is heavy fog shrouded.The xinhua news agency hair(MaRuZhuang perturbation)

    2月17日，北京石景山区被大雾笼罩，能见度下降。新华社发（李文明 摄） On February 17,,Beijing city was the fog shrouded,Reduced visibility.The xinhua news agency hair(LiWenMing perturbation)

    2月17日，在山东聊城街头，一名市民“全副武装”在大雾中出行。新华社发（张宪举 摄） On February 17,,In shandong liaocheng street,A citizen"Armed to the teeth"Travel in the heavy fog.The xinhua news agency hair(ZhangXianJu perturbation)