1. She tried to unravel the mystery, to unriddle the puzzles that had kept her awake at night.
她试图解开这个谜团，解答那些让她夜不能寐的谜题。
2. I can't unriddle this complicated math problem, it's too difficult for me.
我解不开这个复杂的数学题，对我来说太难了。