This is the 3065th most frequent Russian word.
изучать
"Изучать" means "to study" or "to learn thoroughly."
Here, "изучать" is used in its basic form to express the action of systematically studying or learning a subject.
Я изучаю русский язык каждый день.
I study Russian every day.
In this sentence, "изучать" conveys the process of exploring or examining a topic thoroughly.
Он изучает историю своей страны.
He is studying the history of his country.
Here, "изучать" is used in the past tense to indicate the action of learning or delving into a subject that occurred in the past.