enigma
noun [ C ] uk/ɪˈnɪɡ.mə/ us/əˈnɪɡ.mə/
令人费解的事物，令人困惑的事物
something that is mysterious and seems impossible to understand completely
She is something of an enigma. 她有点让人捉摸不透。
The newspapers were full of stories about the enigma of the plane's disappearance. 报纸上充斥着有关飞机失踪之谜的报道。
Synonyms: closed book mystery (STRANGE/UNKNOWN THING)riddle (QUESTION)