Therefore, a research to this problem has great theoretical significance, especially for the development of teacher contingent in the county.

因而对这个问题的研究，具有较强的理论和现实意义，对加强县级区域的教师队伍建设更有价值。

youdao

The theoretical foundation of public case study of the city is a risk theory, through carrying on risk analysis to the contingent city public accident calamity;

城市公共安全研究的理论基础是风险理论，通过对可能发生的城市公共事故灾害进行风险分析；

youdao