| 41. | The usual posts are square, high, and spaced at intervals.
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| 42. | He placed infrared photo cells at intervals on a staircase.
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| 43. | At intervals new ingots are buried to replace those lost.
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| 44. | And features over 30 fortresses spaced at intervals of between.
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| 45. | Beat and refreeze at least twice at intervals of 1 to 1 { hours.
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| 46. | In an interview at Interval's headquarters here, just south of the Stanford University campus.
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| 47. | A low stone wall runs at intervals along this edge.
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| 48. | Parker said, a remark repeated with only slight variations at intervals throughout the evening.
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| 49. | The book also describes fountains that change shapes at intervals.
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| 50. | Live trees were planted at intervals along the lower-level concourses.
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