英 [ˌnɒk ˈɒn]
撞击撞出；敲击（门、窗）
(rugby) knocking the ball forward while trying to catch it (a foul)
以手击球(犯规)：
... knock at .敲（门、窗等） knock on .敲（门、窗等） ladies'room .（妇女用）公共厕所 ...
... go trick-or-treating 去玩“是恶作剧还是请客” knock on 敲打 play tricks on somebody 捉弄某人 ...
撞击撞出；敲击（门、窗）
No sooner had I sat down than there was a loud knock on the door.
我刚坐下就有人大声敲门。
They knock on their neighbours' doors and shout "trick or treat".
他们敲了他们邻居家的门，然后喊着“不给糖就使坏”。
He got a nasty knock on the head.
他头部遭到重重一击。
Hey. (KNOCK ON DOOR) CHARLIE: Bella?
VOA : standard.other
It is no knock on him to say that he has 210 so far.
This will typically tend to have a knock on effect on lowering annuity rates.
Buyers and investors alike agree that a one-time knock on earnings beats a drag that lasts for years.