1. An extended or lengthy process of examining facts, evidence, or information to determine the truth about something, typically regarding a crime, incident, or matter of concern
The prolonged investigation into the financial fraud took over two years to complete.
A investigação prolongada sobre a fraude financeira levou mais de dois anos para ser concluída.
2. A thorough and time-consuming inquiry that requires sustained effort and resources
The prolonged investigation revealed multiple layers of corruption within the organization.
A investigação prolongada revelou múltiplas camadas de corrupção dentro da organização.