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剛剛刷牙的時候，看到在使用中的牙膏標榜很多功效...比較特別平常不會注意到的字用粉色標起來...
1. cavity 蛀牙
2. plaque 牙菌斑 (這個字比較常聽到是用在銘牌或牌匾..但有另外一個用法是牙菌斑)
a substance containing bacteria that forms on the surface of teeth
3. gum problem 牙齦炎
4. sensitivity 敏感性牙齒
5. tartar 牙結石
a hard substance that forms on the teeth
6. enamel 琺瑯質
the hard, white, shiny substance that forms the covering of a tooth
7. staining 牙漬
8. bad breath 口臭
9. paste 膏狀
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