以下为句子列表：
英文: Although smoke may reduce bacterial activity, this potentially positive effect is drowned out by negatives: smoke dries out the mouth, worsens gum conditions and postnasal drip, and leaves a residue whose aroma mixes with the preexisting oral bouquet.
中文: 虽然抽菸也许可以降低细菌活性，但这项潜在好处却淹没于众多坏处之中：抽菸使口腔乾燥、损坏牙龈并恶化鼻涕倒流情形，而且残留物的气味还会与原有的口腔异味混杂在一起。
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英文: Conclusion Cough variant asthma and postnasal drip syndrome are among the most important causes of chronic cough.
中文: 结论咳嗽变异型哮喘和后鼻漏综合征是慢性咳嗽的常见病因。
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英文: Conclusion: Prenasal packing and postnasal packing were an effective treatment for the patients of nosebleed.
中文: 结论：有120例应用前后鼻孔填塞治疗急性鼻出血取得较好疗效，占95.24％，另有6例采用颈外动脉结扎或填塞术后止血，占4.76％。
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英文: Persistent bad breath may be a sign of periodontal disease, an abscessed tooth, chronic sinusitis, postnasal drip, chronic bronchitis, certain kinds of oesophageal problems, and other health conditions.
中文: 持久的口腔异味可能是某种疾病的征兆，如牙龈病、牙床脓肿、慢性鼻窦炎、后鼻漏、慢性支气管炎或某些食道疾病及其他健康问题。
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