context: His student and collaborator, Vladimir Steklov, recalled his first lecture in the following way: A handsome young man, almost of the age of the other students, came before the audience, where there was also the old Dean, professor Levakovsky, who was respected by all students.
source: This subject was already known to the students from the lectures of professor Delarue.
reference_original: O assunto já era conhecido pelos alunos das aulas do professor Delarue.
reference_flipped: O assunto já era conhecido pelos alunos das aulas da professora Delarue.