导读:近日全国多个地区空气质量爆表，雾霾污染成为人们生活中挥之不去的阴影，但是许多人对于雾霾还是没有一个直观的感受，本文记述了一列驶过雾霾区的高铁，其污染程度可以让读者对雾霾的可怕有一个直观的了解。
A high-speed train is discolored after making the journey from Xuzhou to Beijing, Jan 4, 2017.
2017年1月4日，一列高铁从徐州抵达北京之后，车身完全变了色。
Fingermarks can be seen clearly as a railway staff member wipes the train with his fingertips at Beijing South Railway Station on Jan 4, 2017. The train has been running through the smog.
2017年1月4日北京南站，一名铁路工作人员用手指划过列车表面，可以看到留下了清晰的指印。这辆高铁刚刚驶过了雾霾区。
A worker cleans the high-speed train with a mop.
一名工人用拖把清理这列高铁。
Workers clean the train with mops.
工人们用拖把清理高铁列车。
A worker cleans the high-speed train with a mop.
一名工人用拖把清理这列高铁。
Workers inspect and clean the insulator at the top of the train. According to the maintenance staff, the body of the train gets corroded by the smog and the insulator performs worse than usual.
工人们在检查并清理高铁顶部的绝缘体。据维修人员们表示说，这辆高铁的车身被雾霾腐蚀了，由于雾霾的缘故，绝缘体的效果不比以往。
