adj.不被怀疑的，完全接受的，没有异议的，无人反对的，稳固的，无阻挡的，未受盘查的

His authority in the company remains unchallenged.
他在公司的权威无人能挑战。
The king's rule was unchallenged for decades.
国王的统治几十年来未曾受到挑战。
Her beauty was unchallenged among her peers.
她在同龄人中的美貌无人能及。
The theory has remained unchallenged for years.
这个理论多年来一直未受质疑。
His intellect is unchallenged in academic circles.
在学术界，他的才智无人能敌。
The team's dominance in the league is unchallenged.
这支球队在联赛中的霸主地位无人能撼动。
The company's market share seems unchallenged for now.
公司目前的市场份额似乎无人能撼动。
The constitutionality of the law has gone unchallenged.
法律的合宪性一直未受到挑战。
His decision was met with universal acceptance, unchallenged by anyone.
他的决定得到了普遍接受，无人提出异议。
The validity of the research findings remains unchallenged in the scientific community.
研究结果的有效性在科学界仍然未受质疑。