- 1氟化物。日常多說「含氟」（牙膏、塗氟）
Fluoride is a chemical made from the element . In everyday life it is the form people put in , and sometimes in drinking water, because it is believed to help teeth resist decay — to make it harder for holes to start. Dentists here also paint a fluoride varnish on children’s teeth. Though actually, fluoride is not the same as the dangerous yellow gas ; fluoride is the compound, the everyday form. Too much of it can leave marks on teeth, so “more” is not always better.
core核心畫面
組成fluor(ine) + -ide (the usual ending for this kind of chemical).
同家族的字
- fluorinethe element this chemical comes from
- fluoridateto add this chemical to water
- fluoridationthe practice of adding it to water
原始詞典資料3 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
fluoridenoun/ˈflʊəˌɹaɪd/
- 1
chemistrynatural-sciencesphysical-sciencesA binary compound of fluorine and another element or radical.
- 2
chemistrynatural-sciencesphysical-sciencesA binary compound of fluorine and another element or radical.
- However, too much fluoride produces a mottling effect on teeth. Large doses of fluoride are actually toxic.
- The public health practice of adding fluoride to water supplies faces new scrutiny as a few recent reports raise concerns about potential health risks and suggest the benefits may not be as significant as they once were.
- 3
chemistrynatural-sciencesphysical-sciencesThe anionic form of a fluorine atom.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。