knockonn.撞击(打出的粒子)adj.撞击的(被打出的粒子)
knockv.敲击;互撞;攻击n.敲;敲门;敲打
knocking-over comb脱圈板
knock down the flame熄灭火焰
knock one's pipe out出露面; 露头
knock someone for six一击得满分(6分)
knock about/around流浪
Knock up a good score赢得好分数
Knocks on the door.敲门。
knocking disobey rule击球违例
knocking of the valve阀门碰撞
knock sB. senseless把某人打晕过去