The director of the military expenditure and arms production program at the Stockholm International Peace Research Institute doctor Lucy battle Suzhou told the BBC that the world's military expenditure reached $2.24 trillion last year.

斯德哥尔摩国际和平研究所军事开支和武器生产项目的主任露西·巴特尔·苏州博士告诉BBC，去年全球军费开支达到2.24万亿美元。