How to say in Czech: They speak Hungarian fluently.

English
speak fluently.
Czech
Oni mluví plynně maďarsky.
Do they speak Hungarian?
They do not speak Hungarian.
They do not speak Hungarian very well.
They speak Hungarian.
They speak Hungarian very well.
They speak only a little Hungarian.
Does anybody here speak Hungarian?
Are they Hungarian?
Are they learning Hungarian?
Are they learning Hungarian on their own?

Czech phrasebook and translator with tens of thousands of sentences translated by humans. Czechslator is being developed by Michal Měchura. CREDITS Czechslator's sentence generation engine is partially based on Grammatical Framework. All Czech pronunciation is computer-generated using Microsoft Azure Text to Speech. When Czechslator cannot find a translation in its own database, it looks in the PanLex dictionary or obtains a machine translation from Microsoft Translator. PRIVACY Czechslator does not save any cookies in your web browser and does not collect personally identifiable data. Czechslator uses StatCounter for traffic analysis, configured not to save any cookies in your web browser and not to collect any personally identifiable data.