unchallenged 

英汉解释

adj. 不成问题的；未引起争论的；不回避的

同义词

a. accepted，undisputed，unquestioned

参考例句

1. In spite of several highly modern mass communication tools, the power of the word remains unchallenged.
虽然有很多的高度现代化的大众传播工具，言语的力量仍然是不可挑战的。
2. Octavian returned triumphantly to Rome in 29 BC as unchallenged master of the whole of the Roman territories.
公元前29年，屋大维班师回到罗马，此时已身为罗马帝国至高无上的统治者。
3. This record may well remain unchallenged: sales of albums have suffered as pop fans these days prefer downloading individual tracks from the internet.
这个记录将很难被改写：随着流行乐迷变得青睐从因特网上下载单曲，唱片的销售近来一路下降。

英英解释

adj.
  1. generally agreed upon; not subject to dispute

网络释义

unchallenged
不回避的; 未受到挑战的; 未引起争论的; 不成问题的;
go unchallenged
不受质疑;
unchallenged jury
无要求回避的陪审团;