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1. Oxford American Dictionary

   tooth decay

   • IPA[ˈto͞oTH dəˌkā]

   美式

   • n.
     decay of the outer surface of a tooth as a result of bacterial action

   • noun: tooth decay

2. • 釋義

   n.

   名詞

   • 1. decay of the outer surface of a tooth as a result of bacterial action proper oral hygiene practices will go a long way in the prevention of tooth decay
3. • 更多解釋

   tooth decay

   • n.
     decay of the outer surface of a tooth as a result of bacterial action: proper oral hygiene practices will go a long way in the prevention of tooth decay

   Oxford Dictionary