相关单词同義詞virtue, potency, 近義詞 competence 能力, efficacy 功傚, effectiveness 有傚性, productivity 生産率, proficiency 熟練, facility 設備, technique 技術, ability 能力, understanding 理解反義詞inefficiency, 無傚率臨近詞efficient, efficacy, efficiency in, efficiency dip, efficiency gap, efficiency bar, efficiency rate, efficiency rank, efficiency less, efficiency rule, efficiency unit, efficiency test相似詞effervescent, effete, efficacious, efficacy, efficiency apartment, efficiency room, efficient, effigy, 返回 efficiency