词根词缀:liber-
【来源及含义】Latin: free
【同源单词】Alenda lux ubi orta libertas, deliver, deliverance, deliverer, delivery, Ense petit placidam sub libertate quietam
词根词缀:necessar-, necess-
【来源及含义】Latin: needed, inevitable, unavoidable, indispensable
【同源单词】In necessariis unitas, necessarily, necessary, necessitate, necessitous, necessitously