adj. 引人注目的；杰出的；迷人的；猛烈的
n.打出；击倒；引人注目的人或物
The fight was won by a knockout. 这场拳击以一击将对方打倒而获胜。
I know she's a knockout and he's nuts about her. 我知道她是一个美人，他迷恋着她。
You really look a knockout in your new dress. 你穿上这条裙子真是出尽风头。
n.凝聚器
