The tape is mainly to let children who can't yet read quickly understand the contents of the book. Video tapes also aid understanding, such as introducing the plants and animals in their natural setting.
錄音帶主要是讓不識字的幼兒，可以更快瞭解書的涵義；錄影帶則大多用來輔助解釋書的內容，如介紹自然界的動植物生態等。