1
- (in popular music and jazz) a short repeated phrase, frequently played over changing chords or harmonies or used as a background to a solo improvisation（流行乐和爵士乐中的）连复段：
a brilliant guitar riff.
美妙的吉他连复段。
1.1
- a monologue or spoken improvisation, especially a humorous one, on a particular subject（尤指幽默的）独角戏; 即兴谈话：
extended riffs on the pitfalls of contemporary romance.
关于当代浪漫小说中潜在问题的很长的即兴谈话。
no obj.
1- play such phrases演奏连复段：
the other horns would be riffing behind him.
其他号手将在他身后演奏连复段。
1.1
- perform a monologue or spoken improvisation on a particular subject演独角戏; 发表即兴谈话：
he also riffs on racism and the economy.
他还就种族主义和经济即兴发表了演讲。
词源
1930s: perhaps an abbreviation of REFRAIN2.