brain-teaser

英 [ˈbreɪn tiːzə(r)] 美 [ˈbreɪn tiːzər]

n.  有趣的难题

复数:brain-teasers



牛津词典

noun

  1. 有趣的难题
    a problem that is difficult but fun to solve

    英英释义

    noun

    1. a difficult problem

        Synonym:    riddleconundrumenigma