名词
中文翻译：难题
同义词：
['problema', 'quaestione', 'enigma']
例句：
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1. The professor was so perplexed by the quaestio vexata that he couldn't solveit immediately.
教授对那个难题感到困惑，以至于他立刻无法解决它。
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2.The student spent hours trying to solve the quaestio vexata, but still couldn't find a solution.
学生花了好几个小时试图解决这个难题，但仍然找不到解决方案。
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3. The teacher asked the students to present their quaestio vexata inclass, hoping to find a creative solution.
老师要求学生们在课堂上展示他们的难题，希望能找到一个创造性的解决方案。