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