背景音乐

例句：

1. 1. The painting has a beautiful background.
   这幅画有美丽的背景。
2. 2.She was so focused on her work that she didn't notice the background noise.
   她全神贯注于工作，没有注意到背景噪音。
3. 3. The movie is set in a fictional background with a lot of historical elements.
   这部电影设定在一个虚构的背景中，有很多历史元素。