Spanish to German dictionary on English OS

Question

is it somehow possible to add a dictionary for two different foreign languages to the Dictionary app? I am using macOS 10.15 "Catalina" in English and I would like to add a Spanish to German dictionary. Adding a Spanish and a German dictionary is possible. Also also the Dictionary app allows us to add english to german and English to Spanish, but I do not see the the option to add German-Spanish.

Can someone help if this is even feasible? When yes, how can I add this dictionary?

Here is the list of options I have.

Answer 1

I have added other dictionaries to the list, but they have to be in the right format. At the moment, I am not able to look up documentation for the format.