adjective🔗Share未受挑战的，没有竞争者的 Not having any challengers."The champion chess player remained unchallenged after all other competitors withdrew from the tournament. "在所有其他选手退出比赛后，这位国际象棋冠军依旧无人挑战，稳坐宝座。achievementsituationChat with AIVocabulary GamePractice Reading
adjective🔗Share缺乏挑战的，未经考验的 Lacking experience due to lack of challenges; untested."Because she always received perfect scores on easy schoolwork, her potential remained unchallenged, leaving her unprepared for the difficulty of college. "因为她总是能在简单的功课上拿到满分，她的潜力始终未经考验，这让她对大学的难度毫无准备。characterattitudemindabilityChat with AIVocabulary GamePractice Reading
