1. In practice, it is not possible to achieve a completely oxygen-free atmosphere . 2. A coronagraph requires very high-quality optics assembled in a dust-free atmosphere . 3. Some ovens are designed to reflow PCBs in an oxygen-free atmosphere . 4. We especially appreciated the smoke-free atmosphere when we visited the lounges and the casino, 5. They can, and have, established a more secure and free atmosphere , a necessary prerequisite. 6. "I think a free atmosphere is very important for this law, " he said. 7. I wasn't staying here, just soaking up some free atmosphere . 8. Presentation by top political and sport personalities focused on stress-free atmosphere , convenience and reliability. 9. "Learn about Kosovo in an agenda-free atmosphere , " proclaimed the posters for the teach-in. 10. The free atmosphere is usually nonturbulent, or only intermittently turbulent.
