I'm using Google translate API to translate text on my website. What I've found is Google translate works really well for sentences, but for short words it obviously can struggle as it's doesn't know the context that's being used. For example, doing a translation of English to French for the word "Date" returns "le rendez-vous d'amour", i.e. a romantic date, whereas the context in this particular case was "Date of order".
It would be very useful to be able to provide an extra input of a context or example of how the word is used. This is especially useful when the input is only one or a few words, to give the translate engine a hint as to how the word is being used.
Aside from that, you've built yourselves a truly awesome tool there!