Definition (行动)
to take something unlawfully
偷窃；行窃
He knocked off some electronics from the store as if stealing them without a care.
他从店里偷了一些电子产品，好像毫不在意地行窃。
The police are investigating a recent case where one suspect is believed to have knocked off several items.
警方正在调查最近的一起案件，据信一名嫌疑人偷走了几件物品。
The thief knocked off the wallet from her bag with remarkable speed.
小偷以惊人的速度从她的包里偷走了钱包。
to accomplish something swiftly and effortlessly
迅速完成
She managed to knock off the task in no time, which was quite impressive.
她很快就完成了任务，这让人印象深刻。
He knocked off the first draft of the report in just five minutes this morning.
他今天早上只花了五分钟就完成了报告的第一稿。
We knocked off the project in just a few hours.
我们只花了几个小时就完成了这个项目。