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n.听觉迟钝，听觉减退
1、A study on hypoacusis of cleft palate patients───腭裂患者听力减退的分析研究
2、Results The examination showed obvious hypoacusis before operation and obvious improvement five years after operation in cleft palate.───结果三项检查显示腭裂患者术前有明显的听力减退，而术后五年临床观察听力有明显的改善。