因公牺牲 meaning in Chinese

died while on duty; one was killed in an accident when one was on duty

In the fighting the police will be unable to arrest and control the criminals and might be injured if they are not in good physical condition , it is showed that in recent years , the number of the police who were injured or died on duty is increasing , at present of lacking police force , police ' s overworking and their bad equipment
实战中，如果民警的体能条件差，将是弱不敌强，不仅不能制服犯罪，反而容易造成民警的伤亡。据有关资料表明，近年来，我省公安民警因公牺牲和受伤的人数呈上升趋势。目前，公安机关面临警力严重不足，民警超负荷工作，装备落后等现象。