乌焉成马[wū yān chéng mǎ]
词典When a book is copied thrice, some characters become alike.
词典printer's error:排版错误,印刷错误;乌焉成马。
词典printing mistakes owing to similar forms:乌焉成马。
乌焉成马[wū yān chéng mǎ]
When a book is copied thrice, some characters become alike.; printer's error; printing mistakes owing to similar forms