Officer grady was killed in the line of duty .
格雷迪长官在执行任务中被杀害了。
He was killed in the line of duty last year.
他去年在执行公务时殉职。
Many men were killed when we crossed the enemy's line of fire.
我们越过敌人的火力封锁线时，好些人阵亡了。
More than 800 officers were killed in the line of duty last year.
去年一年有超过800名警察因公殉职。
More than 800 officers were killed in the line of duty last year.
去年一年有超过800名警察因公殉职。
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