1 [C] a thing that you cannot understand or explain 难以理解或无法解释的事物；神秘的事物: The cause of the accident is a complete mystery. 那宗意外的起因完全是个谜。 It's a mystery to me what my daughter sees in her boyfriend. 我想不通女儿究竟看上她男朋友什么。

2 [U] the quality of being strange and secret and full of things that are difficult to explain 神秘；神秘感: There's a lot of mystery surrounding this case. 这个案件有很多悬疑的地方。

3 [C] a story, film or play in which crimes or strange events are only explained at the end 疑案作品；推理作品