We sometimes do Spanish-Mandarin translations. This is our process: We stopped doing a direct Spanish-Mandarin translation with Google due to awful results, now we first use Google translate to go from Spanish to English. Then we correct English translation manually. Using Google Translate again, go from Engish to Mandarin. Have a Chinese person correct the translation manually.
I can't even imagine this new system working for more than a few simple and straightforward phrases.
Real Users find the one combination of bizarre input values that shuts down the system for days.