去年的一天，爸爸带我去亚洲最大的编组场——郑州北站参观。来到郑州北站，首先映入眼帘的是许许多多的铁轨和火车。爸爸告诉我编组场的任务是把一节节开往不同地方的车厢排列成像长龙似的火车。这里很繁忙。只见一辆辆机车把开往同一个方向的车厢连在一起组成一列火车，开往 Last year, my father took me to Asia's largest marshalling yard - Zhengzhou North Station visit. Came to Zhengzhou North Station, the first thing that catches your eye is the many railroad tracks and trains. My father told me that the task of the marshalling yard was to arrange the trains that run in different places to form long, long trains. It is very busy here. I saw a locomotive to the same direction bound car together to form a train bound for