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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