This is the 1977th most frequent Portuguese word.
abertos
Open.
In this sentence, 'abertos' is used as an adjective describing the state of the gates as being open.
Os portões estão abertos.
The gates are open.
'Abertos' here is metaphorically used as an adjective to express openness or receptiveness to discussions.
Na sessão de perguntas e respostas, todos ficaram abertos às discussões.
In the Q&A session, everyone was open to discussions.
'Abertos' functions as an adjective to physically describe the state of the documents being open.