knockout blow

例句：

1. 1. The boxer delivereda knockout blow to his opponent.
   拳击手给了他的对手一个致命的一击。
2. 2. The game endedin a knockout blow for the hometeam.
   比赛以主队的一个致命一击而结束。
3. 3. The player was knocked out with aknockout blow from the referee's whistle.
   球员被裁判的哨声一记重击击倒。