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单词 fluoride
释义

fluoride

noun
/ˈflɔːraɪd/, /ˈflʊəraɪd/
/ˈflɔːraɪd/, /ˈflʊraɪd/
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  1. a chemical containing fluorine that protects teeth from decay (= damage from natural causes or lack of care) and is often added to toothpaste and sometimes to drinking waterTopics Physics and chemistryc2
    Word Originearly 19th cent.: from fluorine + -ide.
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更新时间:2025/1/27 20:51:20