Usages of aihe
Luento oli pitkä, mutta professori selitti vaikean aiheen selvästi.
The lecture was long, but the professor explained the difficult topic clearly.
Lukusali on hyvä paikka, kun haluan keskittyä vaikeaan aiheeseen.
The reading room is a good place when I want to concentrate on a difficult topic.
Elon.io is an online learning platform
We have an entire course teaching Finnish grammar and vocabulary.