UI for translators or How to make translator life easier

Hello.

I think the best way for me is to parse body with regexp to translate needed strings.
Strings are stored in DB table.
Any ideas how implement this in drupal?

I have a lot of English nodes on my site. I want to make UI for my translators.
Nodes have a lot of the same strings, and I want give opportunity to my translators to batch translate any string to other language in all nodes bodies. Do you have any idea about it? Or is it another way to make translator life easier?

Thank you...