关于knock off的用法
减去(amount,percentage)
1.We will knock off 10% if you pay cach.你要是付现金，我们会给予你10%的优惠。
2.She wouldn't knock anything off the price.她一点也不肯降价。
停止做...
1.knock off doing sth.(=stop doing sth.)停止做...
(knock off smoking戒烟)
2.knock it off.(美国俚语)=stop it. 别再这样了!
(knock it off, kids, I am studying.别吵了，孩子们，我在学习)
偷走
1.The man kncoked off some pens from the office.这个男的从办公室顺走了几只钢笔。
与...上床(have sex with)
1.He knocked off the bridesmaid. 他和伴娘上床了。
2.In this tribe, a man could knock off with any woman.在这个部落，一个男人可以和任何女人发生性关系。
下班,收工
1. It’s time to knock off，but there are still lots of work to do.该下班了，但是还有很多工作要做。
2.Last night I worked overtime and didn't knock off until nine o'clock. 昨晚我为加班干到九点才下班。
3.When do you knock off?你什么时候下班?
n.山寨货(可数)
1.The watch is actually a knockoff.这块表其实是山寨货。
2.TaoBao is a website where you can sometimes pick up quality knockoffs.在淘宝你又是还是可以淘到质量不错的山寨货。