Definition
to remain in an unspecified or various locations, often over an extended period.
（某人长时间）四处漫游，闲逛；（某物长时间）放置在某个地方
His old car has been knocking around in the garage for years.
他的旧车已经在车库里闲置好几年了。
Why don't we knock around downtown for a bit to relax?
我们为什么不四处闲逛一下市区来放松呢？
This book has been knocking around on my desk; I just haven't had the time to read it.
这本书一直在我的桌子上闲置着，我只是没时间看它。