co·nun·drum

noun

/kəˈnʌndrəm/

a confusing problem or question that is very difficult to solve令人迷惑的难题；复杂难解的问题
- The role of clouds is one of the big conundrums of climatology.云的作用是气候学的一大难题。
a question, usually involving a trick with words, that you ask for fun谜语 synonym riddle

Word Originlate 16th cent.: of unknown origin, but first recorded in a work by Thomas Nashe, as a term of abuse for an eccentric or pedant, later coming to denote a whim or fancy, also a pun. Current senses date from the late 17th cent.

单词	conundrum
释义	co·nun·drum noun /kəˈnʌndrəm/ /kəˈnʌndrəm/ a confusing problem or question that is very difficult to solve令人迷惑的难题；复杂难解的问题 The role of clouds is one of the big conundrums of climatology.云的作用是气候学的一大难题。 a question, usually involving a trick with words, that you ask for fun谜语 synonym riddle Word Originlate 16th cent.: of unknown origin, but first recorded in a work by Thomas Nashe, as a term of abuse for an eccentric or pedant, later coming to denote a whim or fancy, also a pun. Current senses date from the late 17th cent.
随便看	remote learning remote-learning remotelier remoteliest remotely remoteness remotenesses remoter remotes remote sensing remote-sensing remotesensing remotest re-motivate remould remoulded remoulder remoulding remoulds remount remounted remounting remounts removabilities removability