Founded in the 5th century a.d. by refugees fleeing the Lombard invaders who had gained control of the mainland, it became a major maritime power by the 13th century and spread its influence over northern Italy by the 15th century.是什么意思_Founded in the 5th century a.d. by refugees fleeing the Lombard invaders who had gained control of the mainland, it became a major maritime power by the 13th century and spread its influence over northern Italy by the 15th century.在线翻译_英语_读音_用法_例句