We can translate contents/nodes by activating the Content Translation.
Drupal – Content Translation
The translated node itself has not relation with the original node except their node ids are mapped. So I can have a price $10 in the English item but $1000 in the Traditional Chinese item. It will be quite difficult to manage when the amount of content is getting more and more. Therefore, i18n provides another feature called Synchronize Translations. Whenever a node is updated, the synchronized fields of all other corresponding nodes are also updated.
1. Enable the Synchronize Translations.
2. Edit the content type and there will be a Synchronize translations settings under Multilanguage options.
3. Now the Item Picture, Contact Email and Item Price are synchronized. Updating any of these fields will apply to all mapped translated nodes.
Done =)
Eureka! 
Hi,
is this functionality also in Drupal 7 and am I blind? 🙂
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This post is pretty old and it is about Drupal 6.
Depends which translation methodology u used? if you are using entity translation, you don’t need this.
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