German-Chinese online dictionary
This is not exactly a dictionary, but if you have individual words you need to find the meaning of quickly, you may want to try this:

http://translate.reference.com/

I have used Chinese-English, and occasionally other languages as well. As with many digital translation devices, the result isn't always ideal, but you can probably use this as an additional reference.

A word of caution: it does not do idioms well.