| 21. | Severe storms, dust clouds and volcanic eruptions can generate lightning.
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| 22. | When a grenade explodes on sand, dust clouds that can blind enemies are formed.
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| 23. | Surreally, a circus parade arrives, mechanically tootling, and the elephant in a dust cloud.
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| 24. | Yet here the Giants were, peering through their dust cloud at the second-place Dodgers.
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| 25. | These stars have been dimmed by up to 8 magnitudes by its dust clouds.
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| 26. | Buffalos kick up dust clouds on the road's edge.
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| 27. | Rescue workers fear dust clouds will cause respiratory infections.
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| 28. | Perhaps to use a mask if they really found it thick in a dust cloud.
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| 29. | The dust cloud was so fierce that for a half-hour Ramirez couldn't see a thing.
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| 30. | A dust cloud covered the scene and then lifted.
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