名词
中文翻译：机关枪
同义词：
['automatic gun', 'machine gun']
例句：
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1.The soldiers were trained to use machine guns in battle.
士兵们被训练在战斗中使用机关枪。
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2.The policeman was shot by a machine gun during the riot.
警察在暴动中被机关枪击中。
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3. The soldier fired his machine gun at the enemy from atop the wall.
士兵从墙上向敌人开火，使用的是机关枪。