academic subject

Por ejemplo, para acordarme en español de asignatura (academic subject) y aula (lecture hall, classroom), me imagino que la asignatura es mi universidad lingüística y el aula es a lo que huelen esos viejos escritorios en un salón sin ventilar.
For instance, to remember Spanish nouns asignatura (an academic subject) and aula (lecture hall, classroom), I refer asignatura to the view of my Linguistic University and aula to the smell of old desks in badly aired rooms.
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