71.   The fractured vertebra has meant a prolonged period of inactivity for someone who makes his living running and jumping and smashing into people.

72.   The interrogations of captured men led to more searches and arrests, requiring the army to remain in control for a prolonged period of time.

73.   The national economy, in other words, is caught in a prolonged period of slow growth.

74.   The report said a prolonged period of economic sluggishness and ultra-low interest rates was nearing an end.

75.   The stock market can collapse or stock prices can stagnate for a prolonged period, giving earnings a chance to catch up.

76.   The workers were exposed to hundreds of thousands of picocuries per liter of air over prolonged periods.

77.   They will also have to carry a notice warning that listening at full volume for a prolonged period can damage hearing.

78.   This stress response often occurs over prolonged periods of time and can produce emotional and physical challenges leading to potential physical and psychological difficulties.

79.   Those who share air space with the person for a prolonged period of time are at highest risk, he said.

80.   This is the first time he has spent a prolonged period in the city, working on his exhibition and a few assignments for European magazines.