孩子们在楼上不停地走来走去，脚步声咚咚响。

The kids kept ___tramp-tramp-tramping upstairs, their footsteps echoing loudly.

那个疲惫的流浪汉在公园长椅上休息，他的背包里装着全部家当。

The weary ___tramp-tramp-tramp rested on a park bench with all his belongings in a backpack.

他们在山间进行了一次长达五小时的艰难徒步。

They had a five-hour ___tramp-tramp-tramp through the mountains.