co.nun.drum
n.（名词）
A riddle in which a fanciful question is answered by a pun.
谜语：由一个奇妙的问题组成的谜语，其答案为双关语
A paradoxical, insoluble, or difficult problem; a dilemma:
复杂难题：自相矛盾的、无法解决的或难以解决的问题；进退维谷：
例句：
.the conundrum, thus far unanswered, of achieving full employment without inflation.(Arthur M. Schlesinger, Jr.)
.如何既不引起通货膨胀又能实现全民就业这个尚未解决的难题.(小阿瑟M.施莱辛格)
来源：
[Origin unknown]
[词源不知]
