undefeatedKK [ˏʌndɪˋfitɪd] /ˌʌndɪˈfitɪd/發音形容詞1不敗的、未嘗敗績的、未被打敗的The team finished the season undefeated for the first time in years.這支球隊多年來首次以不敗成績結束球季。2不屈的、不服輸的After losing everything, her spirit remained undefeated.即使失去了一切,她的意志依然不屈。