Here is a short explanation and three easy ways to say the sentence so a 7-year-old can understand.
- The foxes run across the path, come back, then go up the hill to hide their paw prints.
- The foxes cross the path, turn around, and climb away so nobody can see their tracks.
- The foxes make a little loop on the path, return, and then sneak up and over the hill to cover their footprints.
Step by step: first they cross the path, then they come back, and last they go up away from the path so their footprints are hidden.