降低、减少(某物的价格)
The store manager knocked 30 percent off the price of the coat.
商店经理将外套的价格降低了百分之三十。
(仓促、草率、即席)做、完成、写出
They knocked off four window frames in an hour.
他们在一小时内仓促地赶做了四副窗架。
He knocked off a poem in 10 minutes.
他在十分钟内即席做了一首诗。
击败,消除,破坏
He knocked off 3 opponents.
他打败了三个对手。
You couldn't knock off every objection.
你不能排除一切异议。
杀死,谋杀
One of those guys got knocked off.
这些家伙中有一个被干掉了。
抢功,盗窃
The pair knocked off several shops, a bank,and some jewelry stores.
这俩人抢了几个铺子,一家银行和几家珠宝店。
逑捕,抓住
Local cops had free authority to knock them off.
当地警察完全有权拘捕他们。