详细解释:n. 声迹, 声槽, 声带
英语解释：
名词 soundtrack:
sound recording on a narrow strip of a motion picture film例句：
A device used to combine and adjust sounds from a variety of sources in order to create a final recorded audio product, such as the soundtrack of a movie.混频器用来混合和调整不同来源的声音以创造出最终被录的音频产品的装置，如一部电影的音道