名词
中文翻译：龋齿
同义词：
['caries', 'dental caries', 'dental decay', 'dental disease']
例句：
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1. He had a cavity in his front tooth that required filling.
他的前牙有一个洞，需要填充。
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2. Dental hygiene is crucial for preventing gum disease and gnathitis.
口腔卫生对于预防牙龈病和龋齿至关重要。
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3. Dentists recommend brushing your teeth twice a day to reduce the risk of gnathitis.
牙医建议每天刷牙两次，以减少龋齿的风险。