名词
中文翻译：大炮
同义词：
['gunpowder', 'cannonball']
例句：
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1.The soldiers fired their cannons at the enemy.
士兵们向他们的敌人开火。
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2. The cannonballs were flying through the air at high speeds.
炮弹在空中以高速飞行。
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3.The cannon was a symbol of strength and power in ancient times.
大炮是古代力量和权力的象征。