走了...路程,cover是走的意思那不是cover the distance of 吗？？走了5公里路 就是cover a distance of 5 kilosYou'd better leave early as you have to cover such a long distance. 那么远的路，最好赶早走。 The train is fast enough that we can cover the distance in less than one hour. 这班火车很快，所以我们可用不到一小时通过这段距离。