spear-point drill是什么意思，spear-point drill的翻译，spear-point drill音标、读音、用法和例句

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spear-point drill是什么意思，spear-point drill的翻译，spear-point drill音标、读音、用法和例句_伍贰汉英词典

spear-point drill

基本解释

专业释义

医药科学