The Commander in Chief visited the island personally, and took steps toward strengthening the defense facilities and fortification.司令亲自登上该岛，采取措施加强防御设施和工事。They began the fortification and reconstruction of the city.他们开始了对城市的设防和重建。They dismantled the fortification.他们拆除了防御工事。In some countries, iron fortification of foods is carried out to reduce iron deficiency.一些国家在食品中添加铁强化剂，以缓解人体缺铁。