| 11. | Too much acidity can cause the disinfectant chemicals to become unstable.
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| 12. | This is most likely in the unstable air over the Southeast.
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| 13. | Ulee's recovering daughter-in-law is unstable.
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| 14. | For a short period of time, he became mentally unstable.
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| 15. | Gilmore said, and the political situation in Thailand remains unstable.
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| 16. | The region has been extremely unstable because of ancient ethnic grievances.
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| 17. | In Malaysia, Rubin will face a potentially unstable political environment.
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| 18. | The region is poor, unstable and populated mostly by Muslims.
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| 19. | But the heavy pots can make boats unstable in rough weather.
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| 20. | I heard water trickling, and realized the slide was unstable.
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