In some cases they speak fluently in a language they hardly know.

有的案例中他们甚至能流利的说一种他们几乎不懂的语言。

youdao

MOST political leaders struggle to speak fluently in a foreign tongue.

绝大多数的领导人都在努力说一口流利的外语。

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As you'd expect, research finds that people who speak fluently are perceived as more knowledgeable and more intelligent.

也许你已想到了，没错，研究发现，那些讲话流畅的人被认为是博学而聪明的。

youdao

He says that in nineteen eighty-six fewer than fifty children in Hawaii could speak their native language 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。

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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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Four out of five second-generation immigrant children speak English fluently, but the same proportion are also fluent in Spanish.

BBC: Life in Spanglish for California's young Latinos

Mitt went on the traditional Mormon mission to France after a year at Stanford, and learned to speak French fluently.

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But today their job prospects are rosier - they are well equipped for multinational customer service positions and speak English fluently.

BBC: Anglo-Indians: Is their culture dying out?