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music 音乐 a short tune in a piece of music that is often repeated and is connected with a particular person, thing or idea （音乐的）主旋律，主导主题 an idea or a phrase that is repeated often in a book or work of art, or is typical of a particular person or group （书、艺术品等的）中心思想，主题，主旨
Word Originlate 19th cent.: from German Leitmotiv, from leit- ‘leading’ (from leiten ‘to lead’) + Motiv ‘motive’.