Why don't we do 'Megillah readings' in English and other languages?

Kolel L'horaah Ma'asis Crown Heights - Shiur 16 on halachic topics - by Rabbi Shraga Dovid Homnick, Sgan Rosh Kolel, on a controversy involving the Rivash and the Ran over the practice of a 'Megillah reading' in Spanish for the women of Saragosa, and the inherent challenges in creating an accurate translation that can be used for halachic purposes

https://www.youtube.com/watch?v=7IJRsPkjTqM