To compliment the Liferay's native offer we created this powerful auto translator. It allows you to choose which structures and structure elements you would like to translate and make it do the job for your you in background.
In the moment where are you choosing wich content you want to translate, you also have the option to choose individual webcontents or choose and entire list.
The webcontent list shows you wich language already have each content.

In can also configure if you want auto publish the translations or if you want to let it in draft to be manual validated

You will need a google api for translation to use this module.

https://cloud.google.com/translate/docs/setup