You can change words, word combinations and other constant values using Language Manager tool.
For this you should
1. Go to Book Library -> Language Manager
2. Insert word in field Search by value constant and press Enter
3. Find your language, click on needed value constant
4. Change this value constant as you want.
Please have a look at screenshot.
Try this method of translating and write me please if everything is ok.
As regards to your question with CB plugin, tell me please, do you have problems with its work (except that it is marked as incompatible)?