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
(..) How did you do that? I did that very well, thank you very much. (clears throat) There must be a logical explanation for this amateur trick. I put this shirt on when I got home... Well, I grabbed it right from the dryer. (..)2015 TvShow: Bones Title: The Promise in the Palace Season: 11 Episode 7