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首页 - 英汉词典 - F字开头的单词或词组 - foreign matter

英语解释

foreign matter

汉语翻译

【化】外来杂质; 夹杂物; 异物

foreign matter例句

A smooth, lustrous, variously colored deposit, chiefly calcium carbonate, formed around a grain of sand or other foreign matter in the shells of certain mollusks and valued as a gem.
珍珠在几种软体动物的贝壳中，围绕着一粒沙子或其他外来物质形成的一种光滑、有色泽、具有不同颜色且主要是碳酸钙的沉积物，被珍视为宝石

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