Below are three formal rephrasings of the phrase, followed by short notes explaining the changes. I corrected ambiguous wording ("punctured line-pages" → "perforated pages") and clarified "sound panel" as an integrated audio panel or module.
- A sturdy board book for a 13-year-old featuring perforated pages with tear lines and an integrated sound panel.
Note: Clarifies the intended reader, replaces "punctured line-pages" with "perforated pages with tear lines," and uses "integrated sound panel" for precision.
- A board book designed for a thirteen-year-old, equipped with lined perforations for detachable pages and a built-in audio panel.
Note: Uses "designed for" to sound formal, "lined perforations for detachable pages" to explain the function, and "built-in audio panel" as an alternative phrasing for the sound feature.
- For a thirteen-year-old: a board-bound book with perforated (tearable) pages and a built-in sound module.
Note: A concise, formal option that uses "board-bound" and "sound module" for a slightly more technical tone.
If you want versions targeting a different audience (e.g., parents, publishers, or a product listing), tell me which audience and I will adapt the wording accordingly.