adj.不败的，未尝败绩的

He remains undefeated in his professional boxing career.
在他的职业拳击生涯中，他仍然保持不败。
The undefeated champion will defend his title next month.
这位不败的冠军将在下个月捍卫他的头衔。
Despite being undefeated, the team feels there is still room for improvement.
尽管保持不败，但球队认为仍有提升的空间。
She has an undefeated record in all her amateur fights.
在她所有的业余比赛中，她保持着不败的记录。
The undefeated boxer is favored to win the upcoming match.
这位不败的拳击手被看好赢得即将来临的比赛。
With an undefeated season, the coach was named Coach of the Year.
凭借一个赛季的不败战绩，这位教练被评为年度最佳教练。
The undefeated team will face their toughest opponent yet this weekend.
这支不败的队伍本周末将面对他们迄今为止最艰难的对手。
His undefeated streak in chess tournaments has reached ten years.
他在国际象棋锦标赛中的不败纪录已经达到了十年。
The undefeated tennis player will be seeded first in the upcoming tournament.
这位不败的网球运动员将在即将到来的锦标赛中列为头号种子选手。
After an undefeated season, the team was crowned league champions.
经过一个不败的赛季后，该队被加冕为联赛冠军。