基于对相应结构和建设要素的探讨，提出了城市公共安全系统优化和完善途径；
The optimization approach of the city public safety system is put forward base on the investigation of corresponding structure and factors.
笔者采用组合功能分析和过程分解的方法，对城市公共安全系统的功能、结构和组成进行了讨论；
The function, structure and its component were discussed by combined function analysis and process decomposition approach.
另一个他承认的失误是，布什说，在2004年大选后他应该跟进一项全面的移民彻查项目，而不该对公共安全系统重组。
Admitting another mistake, Bush said that he should have pursued a comprehensive immigration overhaul after the 2004 election, instead of Social Security reform.
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