riff
verb [intransitive]to play a short repeated pattern of notes in popular music or jazz （流行音乐或爵士乐的）重复段 riffing guitars 即兴演奏吉他
- riff (on something)
to perform a monologue (= long speech by one person) on a particular subject, especially a funny one that you make up as you are speaking 即兴： 在一个特定主题上进行独白，尤其是您在讲话时做的一个有趣的主题Most comedians can riff on politics. 大多数喜剧演员都会即兴重复政治。