| 31. | Most of them are near the end of their service life.
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| 32. | "last longer on high-tech devices " and have " longer service life ."
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| 33. | They are extremely durable and offer a very long service life.
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| 34. | The average service life of a steel or concrete bridge is 50 years.
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| 35. | She was commanded throughout her brief service life by " Kapit�nleutnant"
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| 36. | "No missile silo will be destroyed until its service life expires,"
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| 37. | Its advanced features gave it a very long service life.
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| 38. | Most of the rifles were modified during their service life.
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| 39. | It is said to have a long maintenance-free service life.
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| 40. | Secondary advantages may also be gained of improved service life.
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