单词：extinguishing system
灭火系统
extinguishing system的用法和样例：
例句
- Fire extinguishing systems remain on stand-by.灭火系统保持在待用状态。
- But, the type-A fire should be extinguished by using the fixed type hydrant extinguishing fire system.甲类火则使用固定式消防栓灭火系统灭火。