It was machine gun fire.

是机关枪在扫射。

youdao

In Sichuan, soldiers spent a hard time creeping across Luding Chain Bridge, which was made up of 13 iron chains, in the middle of gun fire.

在四川，士兵们在炮火中艰难地爬过由13条铁链组成的泸定铁桥。

youdao

A few days before, he had run right into machine-gun fire, right into it.

几天以前，他就直冲了到一台机关枪前面，不偏不倚，就在正前面。

youdao

Before marching away, the soldiers set fire to the gun factory and arsenal.

VOA: special.2009.08.20

If you squeeze the trigger of a gun really hard and really fast, it doesn't fire any faster or harder than if you just squeezed it gently.

快速有力地扣动扳机,并不比你轻扣扳机,射出的更加快速或更加有力

耶鲁公开课 - 心理学导论课程节选

The fire did not destroy all the equipment at the gun factory.

VOA: special.2009.08.20

At the end of the day I can supply the bullets but I don't fire the gun.

BBC: Gray under orders to go back up

At the inquest, the firearms expert who had examined the twelve-gauge Mossberg testified that it normally takes five pounds of pressure on the trigger in order to fire the gun.

NEWYORKER: A Loaded Gun

But the gun lobby gets its fire power from the gun manufacturers.

FORBES: Connect