0 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 -- (拳击中的)击败对手的一击,击倒对手获胜
1 a competition in which only the winners of each stage play in the next stage, until one competitor or team is the final winner -- 淘汰赛
The tournament is a straight knockout. 这次锦标赛是直接淘汰赛。
a knockout competition/championship 淘汰赛/锦标赛
2 a person or thing that looks, sounds, etc. extremely attractive -- 极有吸引力的人(或物)
Your sister's a real knockout! 你的妹妹真是令人着迷!
3 extremely attractive -- 极有吸引力的
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
再长的路,一步步也能走完,再短的路,不迈开双脚也无法到达。