film sound的用法和样例：
例句
- The sound tracks of most films are made up of both synchronous sound and postsynchronous sound.
多数电影的声带上均有同期和后期录制上去的声音。 - One way to visualize the importance of detecting gravitational waves is to think of the universe as a movie and gravity waves as sound.
关于探测引力波的重要性，打个形象的比方，可将宇宙看作一部电影，而引力波是电影的声音。
