My main responsibility as security inspector is checking on guards.

作为安全检查员，我的主要责任是检查那些值班人员。

youdao

The prisoner slipped past the guards on the gate and escaped.

犯人从门卫身旁溜出去逃走了。

《牛津词典》

He was on the ground floor and there were no guards.

他在一楼，没有看守。

youdao

This was often dangerous, because guards on the train would throw the men off or arrest them.

VOA: special.2010.06.13

It will house 8,000 people in tents. Fifty security guards will be on duty around the clock.

VOA: standard.2010.03.29

The situation in the West African country remains volatile, after presidential guards opened fire on tens of thousands of pro-democracy protesters on September 28.

VOA: standard.2009.10.16

Despite the massive security at Woodhill, there have been numerous assaults on guards who at times have had to put on full riot gear.

ECONOMIST: Prisons

Also on Wednesday, security guards on the seventh floor of the hospital where Mr Berlusconi was staying apprehended a man who said he wanted to speak to the prime minister.

BBC: Italian PM Silvio Berlusconi leaves hospital

Walkie-talkies crackled, a police helicopter hovered overhead and acres of day-glo clothing were apparent on the guards monitoring the perimeter.

BBC: Fortress security for GM wheat trial