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不败的, 未被击败的
not having been defeated or overcome
- The boxer retired undefeated, having won all of his matches.
这位拳击手以不败之身退役，赢得了所有比赛。
- The team remained undefeated throughout the entire season.
这支球队在整个赛季中保持不败。
- The chess champion remained undefeated for five consecutive tournaments.
国际象棋冠军在连续五场比赛中保持不败。
- The soccer team finished the league season undefeated, securing the championship.
足球队以不败战绩结束了联赛赛季，确保了冠军。
- The student remained undefeated in spelling bees, winning every competition.
这名学生在拼字比赛中保持不败，赢得了每一场比赛。
反义词：