Grading a paper entails commentary and explanation, an answer key.
The truth was that there was no logical explanation.
The explanation once commonly dispensed in textbooks turns out to be wrong.
Neil's explanation was essentially that the tides are caused by the moon.
Losing fur to cool ourselves is a far more probable explanation.
The explanation of crop circles is widely disputed .
That's about the worst explanation of lenticular clouds I have ever read.
She comes back with swagger and a quick explanation for her reappearance.
This explanation seems far-fetched to me.
Understanding how this makes any sense, though, requires a bit more explanation.
British Dictionary definitions for explanation
explanation
/ˌɛkspləˈneɪʃən/
noun
1.
the act or process of explaining
2.
a statement or occurrence that explains
3.
a clarification of disputed terms or points; reconciliation
Word Origin and History for explanation
n.
late 14c., from Latin explanationem (nominative explanatio), noun of action from past participle stem of explanare "to make plain or clear, explain," literally "make level, flatten," from ex- "out" (see ex-) + planus "flat" (see plane (n.1)).