Does Mac OS X contain multilangual speech recognition?

I know that all Macs have a large database for foreign languages. I set my computer to run both English & Mandarin (since I’m learning Mandarin). I would assume, since speech recognition is a part of every Mac, I don’t see why it wouldn’t work, just so long as you tell the computer to operate completely on that language. So, if you installed Mac OSX in English, talking Spanish into the Mic wont do anything. Change what languages the entire operating system runs on & that should do it.