Usages of prevenir
Ainda que não possamos apagar o fogo sozinhos, podemos prevenir novos focos.
Even though we cannot put out the fire alone, we can prevent new outbreaks.
O médico quer prevenir o contágio na sala.
The doctor wants to prevent contagion in the room.
Elon.io is an online learning platform
We have an entire course teaching Portuguese grammar and vocabulary.