本规范EPUB Media Overlays 3.0.1定义了[SMIL]（同步多媒体）的用法 集成语言）、软件包文档、EPUB®样式表和EPUB内容 用于表示与EPUB内容文档同步的音频的文档。 本规范是构成EPUB 3的一系列相关规范之一，EPUB 3是第三大规范 基于XML和Web的数字出版物交换和交付格式的修订 标准。它的阅读和理解应与其他规范一致，这些规范构成 EPUB 3。交叉引用:ISO/IEC 19757-3ISO/IEC 19757-4ISO/IEC 19757-2购买时可用的所有现行修订版均包含在本文件的购买中。

This specification, EPUB Media Overlays 3.0.1, defines a usage of [SMIL] (Synchronized Multimedia Integration Language), the Package Document, the EPUB® Style Sheet, and the EPUB Content Document for representation of audio synchronized with the EPUB Content Document. This specification is one of a family of related specifications that compose EPUB 3, the third major revision of an interchange and delivery format for digital publications based on XML and Web Standards. It is meant to be read and understood in concert with the other specifications that make up EPUB 3.Cross References:ISO/IEC 19757-3ISO/IEC 19757-4ISO/IEC 19757-2All current amendments available at time of purchase are included with the purchase of this document.