Moja siostra jest młodsza o dwa lata.My sister is younger by two years.Breakdown of Moja siostra jest młodsza o dwa lata.byćto besiostrasistermójmydwatworokyearmłodszyyoungeroby (margin of difference)Elon.io is an online learning platformWe have an entire course teaching Polish grammar and vocabulary.Start learning Polish now