Read Edit View history 难题 nántí HSK2 difficult problem Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 难题/難題 · nántí · difficult problem 2026/03/04 难题 / 難題 nántí difficult problem a difficult problem or challenge 这是一个难以解决的难题。 noun created sense Mar 4, 2026, 02:25 AM