We are working on the assumption that it was a gas explosion.

我们正依据它是一起燃气爆炸的假设而行动。

《柯林斯英汉双解大词典》

The problem at Fukushima was not the explosion of a working nuclear reactor (all its reactors had been automatically shut down).

福岛核电站发生事故时，所有的核反应堆都已经自动关闭，也就是说，发生爆炸的并不是正在运作的核反应堆。

youdao

At the time of the explosion, 436 people were working underground.

当爆炸发生时，有436名矿工在井下工作。

youdao

The 26-year-old suffered shrapnel wounds to the head, neck, arms and chest in an explosion while working with a British unit in Sangin in 2007.

BBC: Afghan interpreter has UK asylum rejection reversed

Texas Gov. Rick Perry said he is aware of the explosion, a spokesman said, and was working to get resources into the area.

CNN: Explosion hits fertilizer plant north of Waco, Texas

DeGeorge told officials he suspected the explosion was caused either by "hit men" working for the opposite side in a hotly disputed case he was litigating--a "suspicious-looking fishing boat" had circled his yacht, he said--or by the negligence of a repairman who left flammable material near a stove.

FORBES: Companies, People, Ideas