In literary or artistic creations, the quality of having all the parts centered about one theme, design, or effect; also, the symmetry so produced.
文学、艺术之统一性；(如此所生之)对称或配合。
In the dramatic theory of Aristotle, one of the three limitations to the structure of a play, namely, that of time (one day), that of place (one locality), and that of action (one plot).
(戏剧的)三一律(亚里斯多德的戏剧理论中所提出的原则，规定剧本必须在时间、地点和情节上一致)。