大火烧毁了加利福尼亚一座繁忙的公路立交桥后,建筑工人们昼夜工作,力争早日将高速公路开通。修复工作中最困难的一项作业是夜间用2台起重机吊装一段大型混凝土桥梁。 After the fire destroyed a busy highway overpass in California, construction workers worked day and night to try to open the highway at an early date. One of the most difficult tasks in restoration work was to hoist a large concrete bridge with two cranes at night.