tetralogy
noun [ C ] uk/ tetˈræl.ə.dʒi / us/tetˈrɑː.lə.dʒi/
（文学、音乐作品）四部曲
a group of four related works of literature or music
"Bang the Drum Slowly" was the second of Mr. Harris's tetralogy of baseball novels. 《战鼓轻敲》是哈里斯先生的棒球小说四部曲中的第二部。
Wagner's operatic tetralogy, the Ring of the Nibelungs 瓦格纳的歌剧四部曲，《尼伯龙根的指环》
- More examples
- There are fictional trilogies, tetralogies and chronicles.
- He is completing a tetralogy of novels about the Amazon's integration into Brazil.
- Shakespeare's Richard II / Henry IV Parts 1 and 2 / Henry V tetralogy