出典:Wiktionary
From Middle English fortreden, from 古期英語 fortredan (“to tread down, trample on”), from Proto-Germanic *fratredaną, *fratrudaną (“to trample”), equivalent to for- + tread. Compare Saterland Frisian fertreede, Dutch vertreden (“to trample”), German Low German vertreden, German vertreten ("to represent"; < Old High German firtretan (“to trample”)).