hazard installations的用法和樣例：
例句
- The emergency plan of accident rescuing is a emergency plan for hazard sources.
事故應急救援預案是針對危險源而制定的一項應急反應計劃。 - The main concept and categorization of hazard, which describe the characteristics and essence of hazard from different aspects, have their own limitation.
雖然危險源的一些主流概念和分類方法，從不同側面闡明了危險源的特徵和本質，卻仍有其局限性。
