permanent

n.永久的，持久的

perish, perishable, perishables, perished, perisher, perishing, peristyle, peritonitis, periwinkle, perjure, perjurer, perjury, perk, perkily, perkiness, perky, perm, permafrost, permanence, permanency, permanent wave, permanent way, permanently, permanganate, permeability, permeable, permeate, permeation, permissible, permissibly, permission, permissive, permissively, permissiveness, permit, permutation, permute, pernicious, pernicious anaemia, perniciously,