a group of four related literary or operatic works (文学作品、歌剧等的)四部曲 Greek ■a series of four ancient Greek dramas, three tragic and one satyric, originally presented together (古希腊由三部悲剧与一部滑稽喜剧组成的)四联剧,四部曲
(Medicine)a set of four related symptoms or abnormalities frequently occurring together (医)四联症