The phrase "sufficiently explain" is correct and usable in written English.
You can use it to mean that something has been described clearly enough that the audience is able to comprehend the idea or concept being presented. For example, "The speaker sufficiently explained the new policy for us to understand its implications."
Franny was a good swimmer, and no adult can sufficiently explain how something like this could happen.
Our main finding was that the integrated variables did not sufficiently explain aphid abundance and their biocontrol.
The mechanism of cross-protection is not yet resolved as RNA silencing does not sufficiently explain the phenomenon.
In these instances competition obviously has some effect, but it does not sufficiently explain why older, mature organs suffer in competition with those still in active development.
The first of the 13 false reports, which it is charged in the first count were published, is typical of the others, and will sufficiently explain my position.
Warfare among the northern Ngoni preceded the expansion of the Zulu kingdom, and its rise does not sufficiently explain the violence in the hinterland of the Cape Colony.
Mimicry plays an important role, and market participants often tend to "follow the herd," but does this sufficiently explain the negative consensus on Greece?
Furthermore, neither the departure of Mario Götze (in 2013) nor that of Lewandowski (in 2014) can sufficiently explain why Dortmund have looked a shadow of their former selves physically.
It could be argued that MLS doesn't do a good enough job of providing transparency on its own rules, that they have failed to sufficiently explain the process that results in the trading and signing of players.
On Monday, Merkel admitted she had failed to sufficiently explain her refugee policy, and that her phrase "Wir schaffen das" ("We will manage") had provoked some of those who did not agree with her political course.
Just as race alone cannot sufficiently explain the choices of Trump voters, looking at only class, or only gender, in the absence of race, cannot make sense of these disparities.
