During the last big recession in the mid-1980s, when most building professionals were underemployed, if not unemployed, he took a call one morning from the American Concrete Institute.
在80年代中期发生的最近一次经济衰退期间，当大多数建筑专业人员不能充分就业甚至失业时，他在一天早晨接到了美国混凝土协会的电话。
During the last big recession in the mid-1980s, when most building professionals were underemployed, if not unemployed, he took a call one morning from the American Concrete Institute.
在80年代中期发生的最近一次经济衰退期间，当大多数建筑专业人员不能充分就业甚至失业时，他在一天早晨接到了美国混凝土协会的电话。
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