hazard installations的用法和样例：
例句
- The emergency plan of accident rescuing is a emergency plan for hazard sources.
事故应急救援预案是针对危险源而制定的一项应急反应计划。 - The main concept and categorization of hazard, which describe the characteristics and essence of hazard from different aspects, have their own limitation.
虽然危险源的一些主流概念和分类方法，从不同侧面阐明了危险源的特征和本质，却仍有其局限性。
