This is the 7083rd most frequent Spanish word.
explican
"They explain."
The word 'explican' here is used as the verb form in the third person plural of 'explicar', meaning 'to explain', indicating that a group of individuals (they) are clarifying a concept.
Ellos explican el nuevo concepto a los estudiantes.
They explain the new concept to the students.
Here, 'explican' is used in a reflexive construction ('se explican') that denotes the question of how these events are understood or explained within the sentence.
¿Cómo se explican estos eventos tan extraños?
How are these very strange events explained?
In this usage, 'explican' again serves as the plural form verb directly referring to 'teachers' as the subject actively performing the explanation.