perk.yadj.(形容词)perk.i.er,perk.i.est Having a buoyant or self-confident air; briskly cheerful.敏捷的:有一种轻松自信的气质;愉悦的Jaunty; sprightly.逍遥自在的;活泼的【引伸】perk.ilyadv.(副词)perk.inessn.(名词)