knockout
劍橋詞典
knockout noun [C] (UNCONSCIOUS)
in boxing , the act of hitting the other fighter so that they fall to the ground and are unable to get up again within ten seconds
（拳擊中的）擊敗對手的一擊，擊倒對手獲勝
a knockout punch /blow 使人倒地不起的一擊
也見 knock sb out (MAKE UNCONSCIOUS)
knockout noun [C] (COMPETITION)
(US elimination tournament)a competition in which only the winners of each stage play in the next stage , until one competitor or team is the final winner
淘汰賽
The tournament is a straight knockout. 這次錦標(biāo)賽是直接淘汰賽。
a knockout competition /championship 淘汰賽／錦標(biāo)賽
knockout noun [C] (ATTRACTIVE)
informala person or thing that looks , sounds , etc. extremely attractive
極有吸引力的人（或物）
Your sister's a real knockout! 你的妹妹真是令人著迷！