They don't hesitate to open fire when confronted by police.

他们一旦遭遇警察就毫不犹豫地开火。

《柯林斯英汉双解大词典》

No one believed the soldiers stationed at the border would actually open fire.

没人相信驻扎在边境的士兵们会真的开火。

《柯林斯英汉双解大词典》

If an open fire or cooking causes smoke in your home, find a way to fix it.

如果明火或烹饪导致室内产生烟雾，要想办法解决。

youdao

As he walked with the Confederate officers back to their boat, he asked if General Beauregard would open fire on Sumter immediately.

VOA: special.2009.08.06

Or, another way of saying it is, I'm going to open up the fire hose a little bit today.

也就是说，今天我会把水龙头,稍微多拧开一点。

麻省理工公开课 - 计算机科学及编程导论课程节选

They are said to use forty to fifty percent less wood than an open fire, and produce fifty to seventy-five percent less smoke.

VOA: special.2010.02.01

Coffee is prepared 1700s-style: on the open fire in small copper jugs with long handles.

BBC: Tracing the coffee house revolution to its Ukrainian roots

Vehicles of all shapes and sizes cruise through the rundown environment and immediately open fire.

FORBES: Connect

Few imagine that Mr Mugabe would hesitate to give the order to open fire.

ECONOMIST: Zimbabwe