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
(..) Creek! You're alive! He's so cool. Yes! He's selling us out! Branch! Wait! I'm sure there's a reasonable explanation. At least give him a chance. Thank you, poppy. I'm selling you out. No, stop! No, wait! You better explain yourself, creek! (..)2016 Trolls