This is the 11866th most frequent Portuguese word.
prolongar
"Prolongar" means "to extend or lengthen in time or space."
Here, 'prolongar' is used to indicate extending the duration of the presentation deliberately to cover additional content.
Ele decidiu prolongar a apresentação para incluir mais detalhes.
He decided to prolong the presentation to include more details.
In this case, 'prolongar' shows that an external factor (rain) caused an extension of the duration of the stay.
A chuva prolongou nossa estadia na cabana inesperadamente.
The rain prolonged our stay in the cabin unexpectedly.
Here, 'prolongar' is used to intentionally extend the discussion's duration in pursuit of a mutual agreement.