- 连续击打；反复撞击：
to knock a ball about
踢球
The ship was badly knocked about by storm.
船被暴风雨击打得很厉害。
- 粗暴对待，虐待：
They say her husband knocks her about.
据说她丈夫虐待她。
- 存在，活着；呆在(某处)：
Is your grandpa still knocking about?
你爷爷还健在吗?
It seems that he's been knocking about here for years.
好像他已在这儿好几年了。
- 漂泊，流浪；游荡，闲逛；漫游：
He knocked about Africa when he was young.
他年轻时曾在非洲四处游荡。
He was knocking about outside the cinema when the incident occurred.
事故发生时他正在电影院外闲逛。
- 随便搁置；散置；乱扔(在某处)：
It seems that the suitcase has been knocking about upstairs for years.
似乎这个手提箱已在楼上闲置多年了。
- 与…交往;厮混(常与with, together连用):
How long has she knocked about with the man?
她与那个男人鬼混多久了?
- [口语](在某处)干粗活：
I wear these old trousers for knocking about the garden.
我穿这条旧裤子是为了在花园里干粗活。