孩子们在楼上蹦跳，我们听到他们咚咚咚地跑来跑去。

The kids were jumping upstairs, and we could hear them ___tramp-tramp-tramping around.

他们喜欢在周末踏踏踏地徒步穿越森林。

They enjoy ___tramp-tramp-tramping through the forest on weekends.