A system to detect and warn the dangerous gas in the fire ground is researched and developed.

介绍了一个火场内有害气体探测预警系统的设计和实现。

youdao

Ground controllers will then fire the booster, sending the satellite into its proper orbit.

届时地面控制人员将点燃助推器，把卫星送入预定轨道。

《柯林斯英汉双解大词典》

The theater caught fire and burnt to the ground.

剧院着火烧成了灰烬。

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They've been called in to assist US ground troops. A helicopter gunner asks for permission to fire.

VOA: standard.2010.04.06

"We also have reports of civilian casualties, but the info we have from the Afghan National Army on the ground is that it is believed that that was caused by insurgent mortar fire,".

VOA: standard.2009.09.12

Here was this big hole in the ground--fire coming out of the ground, buildings like stubs, body parts being carried out by firefighters and police officers.

FORBES: Magazine Article

Dragging heavy fire hoses along the ground is never easy, but dragging fire hoses across ice?

WSJ: Chicago Blaze Shows the Misery and Peril of Fire-Fighting in Cold Climes

Mujagic allegedly opened fire at the ground near the prisoner's feet and one of the bullets hit Cordic in the leg.

WSJ: War crimes suspect extradited to Bosnia from NY