How to store translated document and the original document together?

I would like to store already translated documents in SDL studio 2021 and at the same time I would like to store the original documents for the next time I need to translate the similar document, and like this, it is very easy to translate similar documents in the future. But how can we store these translated documents and the original documents? I would like to do all the translated documents and the original documents before I used SDL tool.

Could you please advise me how?

Thank you in advance and have a nice day.

Yoshiko Nosho