Like you said, this is an English translation. Not an English rewrite. If you want to completely change the meaning of the original work by localizing the names, pronouns, or jelly donuts, then you're free to upload your own version.
He made it clear that it's a ring that's 10km wide and 120km in diameter. And each level is a round ring with a massive hole in the middle until the bottom floor, which is likely a circle that's 10km in diameter.