不用救火英语怎么说

不用救火英语的正确说法应该是"no need to use the fire extinguisher"或"there's no need to use the fire extinguisher"。来源是由于使用救火器的时候可以说"use the fire extinguisher"，而不用的时候则可以用"no need to use the fire extinguisher"来表示。
例句：
There's no need to use the fire extinguisher, the fire is already out.
没必要用救火器了，火已经熄灭了。
No need to use the fire extinguisher, the fire department is already on their way.
不用用救火器了，消防队已经在路上了。