英语语法分析

They include dialogue, synchronous and asynchronous sound effects, and music.

它们包括对话、同步和异步的音效以及音乐。

Synchronous sound effects are those sounds which are synchronized or matched with what is viewed.

同步音效是指那些与观看内容同步或匹配的声音。

Synchronous sounds contribute to the realism of film and also help to create a particular atmosphere.

音画同步有助于增强电影的真实性，也有助于营造一个特定的气氛。