N-COUNT (書、電影、人生等的)中心思想,主題,主旨 A leitmotif in something such as a book or film or in a person's life is an idea or an object which occurs again and again. (書、電影、人生等的)中心思想,主題,主旨 [formal]
The title of one of Dietrich's best-known songs could serve as the leitmotif for her life.