1·He removed the cigar, knocking off the ash.
他取出雪茄，敲掉烟灰。
2·If you just run your fingers again and again over this floppy disk, you are disorienting those particles or knocking them off perhaps altogether.
如果你把手指一次次地在这张软盘上滑动，你就会使这些粒子失去方向，或者可能会把它们全部敲掉。
3·The person knocking down all the pins at once is known as a floorer.
一次敲掉所有销钉的人被称为地板匠。
4·I drove down another back road which will run next to the expressway and saw a frontloader knocking down a house.
我顺着与这条高速公路并行的另一条土路开过去，看到一台推土机正在敲倒一幢房子。
5·One, two, three ... three times at the other ... so eight specific actions by him, knocking it with another stone, to take off a flake, and to leave this almost straight line, which is a sharp edge.
所以他不多不少恰恰打了八次，利用其他石头来打磨它，敲掉一小薄片，留下这边面几乎呈现直线，边缘相当之锋利。
1·Have a care! That's my best China you're knocking about.
当心！你在碰撞的是我最好的瓷器。