The discussion revolves around providing inline translation of posts into another language on Discourse forums. tobiaseigen suggests adding a “See translation” link for each topic, which would be beneficial for multilingual communities. They reference a previous conversation about multilingual forums, where trudat argues that technology can help overcome language barriers.
purldator proposes using Google Translate’s API, but notes that there is a pricing involved. codinghorror points out a previous discussion on automatic machine translation of Discourse topics and posts. tobiaseigen confirms that this is the feature they were looking for and shares a link to another relevant conversation about automatic post translation.
The post below is in a topic that should probably be renamed, as it is about allowing users to choose their preferred UI language/locale.
This post is a suggestion about providing a “See translation” link for each topic. Would be very appreciated in my communities. I seem to recall seeing this elsewhere but it does not currently seem to be available as a plugin, or is it?
Continuing the discussion from Multiple languages on single Discourse site:
Best thing I can think of is to use Google Translate’s API. But there is pricing involved.
Do you mean this?
https://meta.discourse.org/t/automatic-machine-translation-of-discourse-topics-posts/16246
Ah, yes. Scary to think I have been involved with discourse long enough that there are conversations here that I have completely forgotten I contributed to. 
That post takes me to this one where I got stuck because of a http/https issue.
https://meta.discourse.org/t/translator-automatic-post-translation/18756/19?u=tobiaseigen
Feature now exists in a officially supported plugin: