enigma

美音音标: [ɪ'nɪɡmə] enigma
英音音标: [ɪ'nɪɡmə] result.0.expl|add:"

同义
mystery secret closed book enigma
词性
n
解释
something that baffles understanding and cannot be explained
示例
how it got out is a mystery|it remains one of nature's secrets

同义
enigma riddle conundrum brain-teaser
词性
n
解释
a difficult problem
示例
None