unchallenged
形容词 C2中文： 无对手的、未受挑战的、无可争议的
- Not having any challengers.
- Lacking experience due to lack of challenges; untested.
- Undisputed, not called into question. · Many of his crazy ideas remained unchallenged.· The intruders went unchallenged.
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But I could not rest, Watson, I could not sit quiet in my chair, if I thought that such a man as Professor Moriarty were walking the streets of London unchallenged.”
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