brain teaser

• n. 谜题；指很难回答或解决；但并不严重或重要的问题

英英释义

名词 brain-teaser:

1. a difficult problem

例句

用作名词 (n.)

1. Puzzles help you use your brain to figure out the answers.Crossword puzzles also have the added benefit of increasing your vocabulary and trivia knowledge.
   谜题有利于你开动大脑去猜测出答案，纵横填字谜还有另外一个好处，能增加你的词汇和琐事知识。