1. An area of land, knowledge, or subject matter that has been carefully examined, researched, or analyzed
The Amazon rainforest is well-studied territory for climate researchers.
A floresta amazônica é um território estudado para pesquisadores de clima.
2. A subject or field that is familiar and well-known due to previous investigation or experience
Medieval history is studied territory for that professor.
A história medieval é um território estudado para esse professor.