N-COUNT A brain teaser is a question, problem, or puzzle that is difficult to answer or solve, but is not serious or important. 脑筋急转弯; 智力题
It's more of a brain teaser than a practical piece of communication.
这不是实用的交流方式，而是脑筋急转弯。
This brain teaser site provides a variety of games and trivia to challenge your mind.
这个脑筋急转弯网站提供各种不同的游戏和琐事游戏挑战你的大脑。
Brain teasers Network - With daily brain teasers and an assortment of popular and challenging games brain teaser Network is a handy site for building mental capacity.
Brain Teasers Net work—通过日常的脑筋急转弯和具有挑战有受欢迎的游戏集合，该网站是增加你心智容量的便利之所。
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