There's other disorders of language such as receptive aphasia where the person could speak very fluently but the words don't make any sense and they can't understand anybody else.

还有其他的语言障碍,诸如,接收性失语症,患有这种病的病人,语言流畅,但所讲话语没有任何意义,而他们也无法理解别人的话语

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