重点词汇
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龋齿
dental caries; caries; tooth decay; decayed tooth
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预防
prevent; provide against; take precautions against; prevention; prophylaxis; preventive; prophylactic; precautionary; against
prevention of dental caries
龋齿
dental caries; caries; tooth decay; decayed tooth
预防
prevent; provide against; take precautions against; prevention; prophylaxis; preventive; prophylactic; precautionary; against