LANGUAGE for beginner please

How can i set a language list ? I mean an automatically translate when we tap for another language. Does it need to use a formula for this setup? please reply me anybody.

What are you trying to achieve here? Could you be more specific?

I mean how to set a translate for language sir. I have just tried to let a users chose for their language but I still too beginner for this. Do I need to translate all words that I wanted too? or what’s its formula? I try to understand a formula a lot. I’ve followed someone post closely too my question but it wasn’t work for mine. Still confuse a little bit about the variables. THANX FOR UR REPLY.