sit in

(idiomatic) To attend a class, educational presentation, meeting, etc. for one time, as a visitor.
To take part in a group musical performance, especially a jazz session, as a temporary guest.
To participate in a sit-in protest.

καταλαμβάνω

ocupar um prédio como protesto

asistir de oyente

Oefen met het spreken en memoriseren van " sit in " en vele andere woorden en zinnen in Engels .

Toon populariteit in de loop van de tijd