I’ve just added a Google Translate option to the forum. If you scroll down to the very bottom of the page you’ll see a drop down that allows you to select the language you want to view the page in. If you choose a language then you’ll get a banner at the top of the page reminding you that you’re in translation mode. I believe, but haven’t tested, that if your browser is set to something other than English (the default for the forum) then you’ll get a prompt asking if you want to translate the page.
Note: Machine translation is very good for getting the idea of content but often contains mistranslations. If the translated text doesn’t make sense this may the reason why. You would be advised to remove translation and view the original text, although in my case the original text is likely to be more confusing than the translated text!