*theme/θim; θiːm/ n [C] 1 the main subject or idea in a book, film etc 〔书、电影等的〕主题: Love is the theme of several of his poems. 爱情是他的几首诗的主题。 2 theme music/song/tune music that is always played with a particular television or radio programme 主题音乐/主题歌/主题曲