For these younger groups, untreated hearing loss can result in lapses in speech and cognitive development, the authors write.
作者写道，对于这些更年幼的群体，未及时治疗的听力损失可能会导致语言和认知障碍。
The researchers defined hearing loss as being unable to hear speech sounds of 25 decibels or less, which is the World Health Organization (WHO) definition for hearing loss.
研究人员所定义的听力受损是指听不见25分贝以及25分贝以下的谈话声音，这也是世界卫生组织(WHO)对听力受损的定义。
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