at home, his approval rating has been stuck in the 20s for months; abroad, george bush has presided over the most catastrophic collapse in america’s reputation since the second world war.
damage accumulated in civil and hydraulic structures, such as dams and bridges, could lead to catastrophic collapse of the structure, causing huge loss to the society.
对土木水利工程结构进行健康监测是具有重大的学术、经济和社会意义。
although neither scenario is likely, i believe that catastrophic collapse represents the greater risk.