Three men were arrested and one was under guard in a hospital.

有三人被捕，一人在医院里受到监视。

《柯林斯英汉双解大词典》

One prison guard was killed when a riot broke out in the jail.

一位狱警在监狱骚乱中遇难。

《牛津词典》

One young policeman stood guard outside the locked embassy gates.

一名年轻的警察在大门紧闭的使馆外站岗。

《柯林斯英汉双解大词典》

The Coast Guard Academy can have thirty-five international students at any one time;

VOA: special.2009.06.04

London-based Olive Security provides former British Special Air Service troops--one unarmed guard for every four or so engineers who go out on a job--to drive and offer a show of muscle.

FORBES: On The Cover/Top Stories

It's ironic that one of the teams in the worst shape now belongs to one of the old guard--and one of Jerry Jones' earliest critics.

FORBES: Cowboy capitalism

Virtually no member of the middle class, which includes just about all expatriate workers, is without at least one all-night guard.

ECONOMIST: Kenya