- Open the install wizard with ‘Help‘ > ‘Install new software...‘
- add the Babel p2 repository: http://download.eclipse.org/technology/babel/update-site/R0.12.1/luna
- select/install your language pack of choice.
- Restart Eclipse and you should get a translated Eclipse.
Eclipse - 安装语言包
原文：http://www.cnblogs.com/xiaobo/p/4542634.html
