Importing the completed translations files into your Application

There are two ways to do this: You can use the JiT (Just in Time) Compiler or AoT (Ahead-of-Time) Compiler. Regardless of the approach, you will need to provide the Angular compiler with

• the translation file(s)
• the translation file format
• the Locale Id (autogenerated by ng-xi18n and can be found in the translation file)

原文: https://angular-2-training-book.rangle.io/handout/i18n/import-translation-files.html