How to Use "pristine" with Example Sentences

1. For rent : 830000 hectares of pristine tropical rainforest .
2. Psychologically we all feel better in a pristine clean home than in one that is a mess and full of clutter .
3. The air-conditioning was on , even though it was one of those ridiculously pristine southern california days .
4. The second pillar is the pristine environment .
5. Greens fretted that it threatened a pristine wilderness .