中英释义：
双语例句
歹徒手持自动步枪绑架人质,被公安干警拿下.
The bandit who kidnapped the hostage with an automatic rifle was seized by police.
其中一场追悼会在爆炸核心区举行，武警部队、公安干警向已逝去的消防员们致哀。
One was held in the core area of the blasts, where soldiers and police officers paid tribute to the deceased firefighters.
重点词汇
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公安
public security; public safety; police
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干警
police officer; law enforcement officer; police cadre