Consider reverse translate (so e.g. English -> Chinese) and add to db screen
I sometimes find myself looking up a word in Hanping or Google Translate then adding as a note. This would really need example sentences with each word and frequency information though - at least with markedly different languages there is absolutely no guarantee you can use a given word in the intended/desired usage contexts so examples and frequency info are really obligatory.
This is still no guarantee but if the word is a frequent word then it is useful to learn anyway, so not a terrible loss either.