challenger的复数形式为：challengers...

For years, blatantly false assertions have gone unchallenged...多年来，一些明显错误的断言都没有受到质疑。They will not allow your more way-out ideas to pass unchallenged.他们不会放过你这些古怪的念头的。...the man who has led his party unchallenged for over ...

The home team saw off the challengers by 68 points to 47.主队以68∶7击败前来挑战的客队.We are the challengers.我们是挑战者.That victory put the Ukrainians beyond the reach of their nearest challengers, Dynamo Moscow.本场胜利使乌克兰人甩开了最强有力的对手，莫斯科...

Offe also challenges the postulate of an "organized capitalism".奥费也质疑“有组织的资本主义”的假设。Griffon: You! Are you the human, the son of Sparda who challenges the Darkness Mundus?狮鹫: 你! 你就是那个企图挑战魔帝穆图斯的人类, 斯巴达的儿子?Economical marketi...

adj.未受到挑战的，不成问题的，未引起争论的，无异议的...