灭火用英语可以说作 "put out a fire" 或 "extinguish a fire". 这个词来自英语单词 "extinguish", 源自拉丁语 "ex" (out) 和 "tinguere" (to quench), 表示"把火熄灭"的意思。

例句：

The firefighters quickly put out the fire. (消防员迅速把火灭了。)

Please extinguish your cigarette before entering the building. (请在进入建筑物前把烟熄灭。)

The fire was finally extinguished after several hours of fighting. (经过几小时的抗火，终于把火熄灭了。)