71.   The most important characteristics can be summarized in what aerodynamics experts call a Reynolds Number.

72.   The procedures have become so cumbersome that some travel experts are calling for a new approach.

73.   The report addresses what experts on both sides of the environmental debate call a glaring problem with existing programs.

74.   Their son was what experts call a binge drinker.

75.   They are freshwater mussels, and they are in the midst of what experts call a mass extinction.

76.   This is what the experts call going off message.

77.   Those experts call the problem overdiagnosis, or finding tumors that are not dangerous but that cannot be distinguished from ones that may become lethal.

78.   Though some experts call truancy a growing crisis, what happens to kids who miss class varies with their parents, their school, even their neighborhood.

79.   Thus, experts call botulinum toxin one of the most important new drugs for certain serious eye and other central nervous system disorders.