森林里的小路是野生动物长期踩踏形成的。

The narrow ___trackway in the forest was formed by animals over many years.

这条轨道可以让火车快速穿过山区。

The ___trackway allows trains to travel quickly through the mountains.

公园里新建了一条铺着碎石的步道，专供慢跑者使用。

The park has a newly built crushed-stone ___trackway specially designed for joggers.