Definition
Used to tell someone to stop doing something annoying.
停止！(非正式)
"Knock it off!" Mom said to the noisy children.
「別鬧了！」媽媽對吵鬧的孩子們說。
If you keep tapping on the table like that, I'm going to tell you to knock it off.
如果你繼續那樣敲桌子，我就要叫你別鬧了。
They were telling jokes to each other during the meeting until the boss told them to knock it off.
他們在會議期間互相講笑話，直到老闆叫他們別鬧了。