1. An area of land that has not been contaminated by pollutants such as chemicals, waste, or emissions
The explorers discovered an unpolluted territory deep in the rainforest.
Os exploradores descobriram um território não poluído no coração da floresta tropical.
2. A region or geographical area free from environmental degradation and pollution
Environmental scientists study unpolluted territory to establish baseline data.
Cientistas ambientais estudam territórios não poluídos para estabelecer dados de referência.