名词
中文翻译：枪炮层
同义词：
['gun layer', 'gun casing', 'shell layer例句：1. The soldier was buried under a pile of gun-layers.（士兵被一堆炮弹埋了。）']
例句：
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1. The soldier was buried under a pile of gun-layers.
士兵被一堆炮弹埋了。
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2. The soldiers were using gun-layers to cover their tracks.
士兵们用炮弹层来掩盖他们的足迹。
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3. The artillery team used gun-layers to clear the area for the next attack.
炮兵队使用炮弹层为下一次攻击清除区域。