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词汇 fluoride
释义

fluoride

noun
/ˈflɔːraɪd/, /ˈflʊəraɪd/
/ˈflɔːraɪd/, /ˈflʊraɪd/
  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 water氟化物Topics Physics and chemistryc2
    词源early 19th cent.: from fluorine + -ide.
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