走了...路程,cover是走的意思那不是cover the distance of 嗎？？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. 那么遠的路，最好趕早走。 The train is fast enough that we can cover the distance in less than one hour. 這班火車很快，所以我們可用不到一小時通過這段距離。