Someone asks me via massage on YouTube.

I have a coworker that I tried to intoduce to Star Trek through the episode 'Trouble with the Tribbles'. He was unable to understand much of it since English is a 2ed or 3ed language to him. He tried to get the Russian version and was unable to. Are you able to convert the spoken dialog to your native language when you watch the shows on YouTube or do you have to listen to it in English? If you can convert to your native language can you tell me how so that I may help him watch a great show.

Mmmmm Am I seems to be a know all type? I don't know.So anyone know where to find Russian 'Trouble with the Tribbles' dubbed/subtitle? I find only French and English. Thank in advance.