1. An area of land or territory that has not been investigated, mapped, or visited by explorers or researchers
The Amazon rainforest still contains many unexplored regions where new species are discovered regularly.
A floresta amazônica ainda contém muitas regiões inexploradas onde novas espécies são descobertas regularmente.
2. A subject matter or field of knowledge that has not been thoroughly investigated or understood
Deep space remains an unexplored region for human understanding.
O espaço profundo continua sendo uma região inexplorada para a compreensão humana.