brainteaser是什么意思

n.难题,谜

1、Her question was a real brainteaser and it took me a while to figure out the answer.
她的问题是一个真正的脑筋急转弯，我花了一些时间才想出答案。
2、I love challenging myself with brainteasers to keep my mind sharp.
我喜欢用脑筋急转弯来挑战自己，保持头脑敏锐。

谜题；脑筋急转弯；难题