Conundrum
01
谜题, 难题
a problem or question that is confusing and needs a lot of skill or effort to solve or answer
例子
The researchers faced a conundrum when the experimental results contradicted their initial hypothesis.
研究人员在实验结果与他们的初始假设相矛盾时面临了一个难题。
02
a puzzling question or riddle, often involving wordplay, posed for amusement
例子
The teacher asked the class a conundrum to make them think.
