Have you ever looked out of your window and seen a really pretty tree or a mountain or a lake in the distance? That's called "scenery" – it's what you can see outside.
Now, imagine if someone else owned that pretty tree or mountain or lake, but you could still see it from your window. That's called "borrowed scenery."
So, let's say you have a window in your room and you can see a really big tree that your neighbor owns. You didn't plant the tree, you didn't take care of the tree, but you still get to enjoy looking at it every day. That's borrowed scenery!
People might use the idea of borrowed scenery in different ways. For example, if you have a garden, you might plant some flowers or trees in certain spots so that when you look out at them, you can also see the pretty lake or mountain in the distance. This makes your garden look even more beautiful!
So, borrowed scenery is when you get to enjoy looking at something that you don't own or take care of, just because it's in your line of sight.