You should edit the requested translations (in this case German) and make English a requested translations for this text.... It helps to excelerate the requested translations! For more information about this, look at the English forum .... I could write this message in German, but my German isn't well enough. I do understand your message(some words you know, but not all the words).
お気に入りの翻訳
.... I could write this message in German, but my German isn't well enough. 
I do understand your message(some words you know, but not all the words).