| 21. | At first, we really wanted to do an underwater game.
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| 22. | One of them required a leap that sent me far underwater.
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| 23. | While the risk is slight, underwater landslides are not unknown.
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| 24. | Epictetus is just the thing for those with underwater stock options.
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| 25. | Perhaps it would be more practical to build an underwater robot.
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| 26. | I had to practice going underwater, and I would panic.
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| 27. | Underwater technology is locating ships of all ages at fantastic depths.
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| 28. | They sent Morse code, and you could hear it underwater.
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| 29. | When a diver goes underwater, the ambient pressure increases dramatically.
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| 30. | Finally, in Vermont, it is illegal to whistle underwater.
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