Google has recently launched a new Translate Community where language enthusiasts can help Google improve translation quality for the 80 languages supported by Google and assist Google with launching new languages.
They need lot of multi-lingual people around the world who can come and join the community.
This post is officially launched on Google Inside search blog post
They will also in process to localize Community pages to support your preferred display language.
They also said on the post :
When you spot a translation that you’d like to edit, click the “Improve this translation” pencil icon and click “Contribute” to submit your suggestion to us. We plan to incorporate your corrections and over time learn your language a little better.
You can join the community here