The fire had burnt (itself) out before the fire engines arrived.

救火车到达之前火就熄灭了。

《牛津词典》

The fire engines were just pulling up, sirens blaring.

救火车刚刚停下，警笛声还在尖利地响着。

《柯林斯英汉双解大词典》

Six fire engines, two trucks and two chiefs responded to the scene.

六辆消防车、两辆卡车和两名长官赶到现场。

youdao

That means the long-range rocket, which international satellites have spotted on a North Korean launch pad, could fire its engines as early as Saturday.

VOA: standard.2009.04.01

Mosaics, towers and domes apart, it boasts three ambulances and five fire-engines.

ECONOMIST: Palestinians get their wings

Ambulance drivers transporting patients are exempted under the Road Traffic Regulations Act 1984 - as are police and fire engines - but transplant vehicles are not.

BBC: Steven Trayler

Only emergency vehicles - buses, taxis, fire engines, ambulances, police cars, rubbish trucks - and those powered by gas or electricity remain exempt from the ban.

BBC: News | Europe | Off the roads