fiddle around
phrasal verb with fiddle verb uk/ˈfɪd.əl/ us/ˈfɪd.əl/
disapproving (UK also fiddle about)
瞎混；虚度光阴
to spend time doing small things that are not important or necessary
I was just fiddling around in the kitchen. 我只是在厨房随便干点什么打发时间。