AIM: to focus on early language education of young children, so as to seek for the reason of language development delay.
前言：目的：关注幼儿的早期语言教育，寻找语言发育迟缓成因。
METHODS: the recent status of language development in children with language development delay were surveyed by interview and tracking observation to analyze the pathological reasons.
方法：采用访谈、跟踪观察的方式了解语言发育迟缓儿童语言发育现状，并对该病成因进行分析。
A delay in or total lack of the development of spoken language (not accompanied by an attempt to compensate through alternative modes of communication such as gesture or mime).
口语能力发育滞后或完全缺失，且未有寻求诸如手势或肢体语言等替代手段的表现。
A delay in or total lack of the development of spoken language (not accompanied by an attempt to compensate through alternative modes of communication such as gesture or mime).
口语能力发育滞后或完全缺失，且未有寻求诸如手势或肢体语言等替代手段的表现。
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