Limiting the cost is based on considerations of economics, and limiting the pages on those of pedagogy. Both restrictions have been set forth according to educational principles and past experience. But publishers don't accept that reasoning.
「限價是基於經濟考慮，限頁則基於教學的理由；而且，兩者都是按照以往編寫教科書經驗及教育原則擬定出來的」，編譯館館長曾濟群強調。