名词
中文翻译：山炮
同义词：
['mountain artillery', 'mountain cannon']
例句：
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1.The mountain gun was a symbol of the bravery of the soldiers.
这座山炮是士兵们英勇的象征。
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2. The mountain gun was used to defend the border against invading forces.
这座山炮被用来防御边境，抵御入侵者。
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3. The mountain gun was a major source of ammunition for the war.
这座山炮是战争的主要弹药来源。