gunpowder nails是什么意思，gunpowder nails的翻译，gunpowder nails音标、读音、用法和例句

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gunpowder nails是什么意思，gunpowder nails的翻译，gunpowder nails音标、读音、用法和例句_菜篮子兴趣思朗文词典

gunpowder nails

基本解释

专业释义

机械工程