雾霾中的北京

导读：近一周时间，北京等地遭遇严重雾霾天气，PM 2.5持续爆表。从气象部门获悉，随着“风雨”的来临，这场雾霾即将散去。而在这之前，让我们一起来重温一下曾经的蓝天白云吧!

"The longest distance in the world is not between life and death, but between you and me when I hold your hand in the street but cannot see your face," is a joke that circulated online.

“世界上最远的距离,不是生与死的距离,而是我在街头牵着你的手,却看不见你的脸……”这是很火的一则网络段子。

Sadly, it`s not a joke anymore. With smog constantly shrouding many cities in China, chances are that you may not even remember the good old days when the sky was much clearer and the air fresher.

而悲剧的是，这句话已经不再只是个玩笑而已了。近日我国大部分城市持续遭遇雾霾，你可能已经快忘记美好往昔里那碧空万里和清新空气了。

A corner watchtower of the Forbidden City, Beijing.

北京故宫角楼雾霾前后对比图。