Slowly,fewer and fewer young natives learned to speak Hawaiian fluently.

VOA: special.2009.12.02

He now has super-human mathematical talent, can read and remember the contents of an encyclopedia volume in a few minutes, and speak a language fluently after reading one textbook.

他现在有超过人类的数学能力，能阅读,能在几分钟内记住百科全书的内容,通过阅读一本教科书就可以,流利地讲一门语言了。

哈佛公开课 - 计算机科学课程节选

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

耶鲁公开课 - 心理学导论课程节选