如何在用户数据库中存储用户输入数据的本地化版本？

I am working for a client on a web app that requires localization in 3 languages (English and 2 others). I understand how to use resources in an ASP.NET application to display localized versions of static data. However, I am not sure how to approach the issue of localized user-entered data. For example, an administrator may want to add some new metadata the application (e.g. a new product category). This will eventually need to be translated into all 3 languages, but it will initially be entered in whatever language the administrator knows. Since this kind of data is not static, we store it in the database. Should we add a culture code to the primary key to differentiate different localized versions of the same data? Is there a "best practice" or pattern I'm not aware of for this kind of problem?I am working for a client on a web app that req