我提着沉重的旅行包,与一群终日奔忙在这个城市的人们一起,站在地铁站台的一串金属脚印上候车。我正想像着头顶上的城市在怎样高速地运转着,一班地铁已呼啸着到站了。随着车门“呼”的一声打开,早已等候在车门前的两列队伍默契、迅疾地鱼贯而入。因为是始发站, I carry a heavy travel bag, together with a group of people who have rushed around the city all the time, standing on a string of metal footprints waiting on the subway platform. I was contemplating how the city overhead was operating at a high speed. A subway line had whistled to the station. With the opening of the car door, the two queues that had already waited in front of the car had a tacit understanding and swiftness. Because it is the originating station,