(a) Since 11 September 2001 the fight against terrorism has become one of the priorities for all intergovernmental systems, both at the international and regional levels, as well as for a number of countries.
17. (a) 自2001年9月11日以来，反恐斗争已成为所有国际和区域政府间系统以及一些国家的优先任务之一。