This is the 9793rd most frequent Portuguese word.
demandar
To request, require, or demand.
In this sentence, 'demandar' is used in the sense of requiring or needing time and effort.
O projeto vai demandar muito tempo e esforço para ser concluído.
The project will demand a lot of time and effort to be completed.
Here, 'demandar' is applied in the context of initiating a legal action or lawsuit to claim something.
Ele decidiu demandar judicialmente pelos seus direitos trabalhistas.
He decided to legally demand his labor rights.
In this example, 'demandar' indicates requiring or necessitating an immediate response or action.