book wrapper
wrapper: piece of material, usu paper, that covers sth such as a sweet, book, or newspaper that is posted （包装糖果、 书籍或邮寄报纸等用的）包装材料（通常指纸）: Please put all your sweet wrappers in the bin. 请把你们的糖纸都放进垃圾箱里去.
糖纸 sweet wrapper
同理，包书纸 book wrapper
book wrapper
wrapper: piece of material, usu paper, that covers sth such as a sweet, book, or newspaper that is posted （包装糖果、 书籍或邮寄报纸等用的）包装材料（通常指纸）: Please put all your sweet wrappers in the bin. 请把你们的糖纸都放进垃圾箱里去.
糖纸 sweet wrapper
同理，包书纸 book wrapper