theme music
noun [ U ] uk/ˈθiːm ˌmjuː.zɪk/ us/ˈθiːm ˌmjuː.zɪk/
主题音乐
music that is written for and played during a particular television programme or film
From down the hall the theme music of the news channel blared from Nana's TV. 在走廊的远处，从娜娜的电视机里传出新闻频道刺耳的主题音乐。