conundrum

名词

1. 1

   难题、棘手的问题

   The city faces a conundrum over how to fund public transport.

   该市面临如何筹措公共运输经费的难题。

2. 2

   谜语、脑筋急转弯旧式

   He entertained the children with riddles and old conundrums.

   他用谜语和老式脑筋急转弯逗孩子们开心。