不得而知 bùdé'érzhī HSK7 unknown Definitions Defs Origin Strokes Stroke Words Sentences Sents 3 sentences 雕塑师的名字不得而知。 diāosù shī de míngzi bùdé'érzhī. The name of the sculptor is unknown. Source: CCMatrix为什么要改名,我不得而知。 wèishénme yào gǎi míng, wǒ bùdé'érzhī. Why they changed the name, I don't know. Source: CCMatrix飞行员的命运尚不得而知。 fēixíngyuán de mìngyùn shàng bùdé'érzhī. The fate of the pilot remains unknown. Source: CCMatrix