1. Work or task that involves multiple interconnected elements, requiring significant mental effort, specialized knowledge, or intricate problem-solving
The architecture of the new building is a complex work that required years of planning.
A arquitetura do novo edifício é um trabalho complexo que exigiu anos de planejamento.
2. A project or undertaking characterized by intricate processes, many variables, or high levels of difficulty
Managing the merger between the two companies proved to be a complex work.
Gerenciar a fusão entre as duas empresas provou ser um trabalho complexo.