名词
中文翻译：Unknown
同义词：
['mechanical cannon', 'mechanical gun', 'mechanical artillery']
例句：
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1. Themachine cannon was used to fire projectiles at the enemy.
这台机械炮用来向敌人发射炮弹。
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2.In ancient times, machines were used for mining and construction.
在古代，机械被用于采矿和建筑。
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3. The engineer designed a new machine cannon that could fire more accurately.
这位工程师设计了一种新型的机械炮，可以更准确地射击。