fluently

He can read and remember the contents of an encyclopedia volume in a few minutes, and speak a language fluently after reading one textbook.(他能在几分钟内阅读并记住百科全书的内容，并且能在读完一本教科书后流利地说一门语言。)

English has a large vocabulary with different usages so it's not easy for a Chinese person to speak English as fluently as a native speaker.(英语词汇量很大，用法也很多，所以一个中国人想把英语说的像母语者一样流利并不容易。)

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。)

He can recite the poem fluently.(他把那首诗念得琅琅上口。)

Quite a few officers and soldiers can speak English fluently.(不少官兵能说一口流利的英语。)

She talked ungrammatically but fluently.(她讲话不符合语法规则，却很流利。)

I can't speak English fluently as I am out of practice.(我不能流利地说英语，因为我已荒疏了。)

We were doubly lucky inasmuch as my friend was living on the island and spoke Greek fluently.(我们真是幸运极了，因为我的朋友住在岛上而且希腊语说得很流利。)

She speaks English fluently.(她英语讲得很流利。)

I speak English very fluently.(我说英语很流利。)