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英语解释

foreign matter

汉语翻译

【化】 外来杂质; 夹杂物; 异物

foreign matter例句

  1. 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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