Using bootstrap conenctor, One can integrate with human and machine translators to create language copies in AEM.
When you create a language copy in AEM, it asks for pages/assets that need to be translated and after selecting it, AEM translation Management process the source content and translates the content using the translation provider selected during translation. It creates a similar structure in AEM.
Suppose if you want to translate whole sites of we.retail Canada English whose path is /content/we-retail/ca/en to the German Language(de) then the target structure of translated copies will be /content/we-retail/ca/de
However, language copies never create a live copy relationship [Don't get confused with live copy concept]