便べん利りな んだ。benrina nda.(It's because) it's convenient.Breakdown of benrina nda.便べん利りなbenrinauseful, convenientんだndathe explanation is that...; it is that....Elon.io is an online learning platformWe have hundreds of Japanese lessons and thousands of exercises.Start learning Japanese nowNihon-shiki romanizationwatasi ha tyuugoku kara kimasitaHepburn romanizationwatashi wa chuugoku kara kimashita