extinguishing agent的用法和樣例：
例句
- The authors have been engaged in the studying of the foam fire extinguishing agent and the drafting of the standard for many years.
本文筆者通過多年從事泡沫滅火劑研究及標準制訂工作的實踐，提出了泡沫滅火劑標準制訂應遵循的六項原則。 - The experiment results show that the new water-series extinguisher has better extinguishing effect than water.
通過滅火實驗得出新型水系滅火劑具有明顯優於水的滅火效果。
