n.声道；电影配乐；电影原声带
Music is the soundtrack of your life. 音乐是你的生命声道。
Yon have to synchronize the soundtrack with the film. 你必须使电影画面与声道同步。
The film had an exciting soundtrack. 这部电影有一种令人兴奋刺激的背景音乐。
