The company offered little 'by way of explanation' for the delays. [=as a way of explaining why there were delays]
Some of the more technical terms need/require 'explanation'. [=they need to be explained]
a likely/probable/possible/plausible 'explanation of' how the accident occurred
(..) What you were thinking? What you asked Saul to do? I mean, come on. It's just nonsensical. I mean, do you... You have any explanation at all? What? It's like you said. It's... It's blood money. (..)2013 TvShow: Breaking Bad Title: Blood Money Season: 5 Episode 9