"can better explain" is correct and usable in written English.
It is used to indicate that someone is capable of providing a clearer or more thorough explanation of something. For example: "I think Sarah can better explain the concept of quantum physics to us since she has a degree in physics."
Alison Galvani and Montgomery Slatkin at the University of California, Berkeley, argue that smallpox can better explain the existence of this mutant variety of gene.
"I said, 'Look, we've got to get the maximum audience because there's nobody alive who can better explain why Al Gore should be president than you.' " Mr. Gore said it would not be fair to compare his task to that of Vice President George Bush in 1988, who advisers said was essentially offering himself as the steward of a third term of the Reagan administration.
Businesses also can better explain and warn about risks.
The mechanism of internal filtering and external packaging can better explain dispute transformation.
We can better explain this by extrapolating the findings from the prevalence curve.
This modified model of aggregation can better explain the rapid aggregation of zero-valent iron nanoparticles that is observed.
"If we shift the emphasis from DNA sequence variation to epigenetics misregulation as a key mechanism of disease origin, we can perhaps better explain the non-Mendelian features" of diseases.
Assessing the geometry of the coronary arteries in a patient can help to better explain coronary artery disease (CAD) development.
"They can help a farmer go through their practices and say, you can do better," explained Michelle Harvey, who leads Environmental Defense Fund's on-site corporate partnership with Walmart.
These differences can be partially attributed to the number of phenotypes available for genotyped chickens and can be better explained when evaluations of males and females are considered separately.
"I have been training very hard for three years and my goal was wanting to go to Athens and to show people I can do better," explained the impoverished engineering student, having travelled from his adopted home of Valencia just a couple of days before the Equatorial Guinea team were due to set off for Athens.
