英 [ˈbreɪn tiːzə(r)]
脑筋急转弯：一种用于考验思维能力和解决问题的谜题或难题。通常需要创造性地思考和找到非传统的解决方法。
brain teaser //
可数名词 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
a difficult problem
同义词： riddle / conundrum / enigma / brain-teaser
... as the crow flies直线距离,笔直的 brain-teaser脑筋急转弯 internal combustion engine内燃机 ...
... rode ride过去式 brain-teaser趣味智力题 hinder妨碍 ...
Then both groups took the brain-teaser test again.
随后这两组学生要再做一次脑筋急转弯测试。
The answer reminded me of a brain-teaser that's been entertaining me for the past couple of months.
这个回答让我想起了几个月来一直在思考的一个脑筋急转弯问题。
This is the latest brain-teaser taking the Internet by storm, inviting people to take on the challenge in fewer than five seconds.
这是最近风靡网络的脑筋急转弯，让人在五秒钟内挑战成功。
Afterward, stop by the nature-themed gift shop, which sells gifts, books, toys and brain-teaser souvenirs.
There's a big brain-teaser at the moment because life expectancy for men and women is going up.
BBC: NEWS | Programmes | Working Lunch | Pensions: Past, present and future
The spread of these black-market cubes challenges the London-based company with a marketing brain teaser.
WSJ: One Rubik's Cube, Many Knockoffs, Quintillions of Possibilities