Read Edit View history 一成不变 yīchéngbùbiàn HSK7 immutable Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 一成不变/一成不變 · yīchéngbùbiàn · immutable 2026/03/04 一成不变 / 一成不變 yīchéngbùbiàn immutable immutable; impervious to change; set in stone 世界上没有一成不变的事物。 idiom created sense Mar 4, 2026, 02:25 AM