pe·rip·e·ty英pəˈrɪpɪtiː美pəˈrɪpɪtiAHDpə-rĭpʹĭ-tē 基本英英近义反义 n.突变¹⁰⁰ Noun: a sudden and unexpected change of fortune or reverse of circumstances especially in a literary work;
a peripeteia swiftly turns a routine sequence of events into a story worth telling