相关单词同义词virtue, potency, 近义词 competence 能力, efficacy 功效, effectiveness 有效性, productivity 生产率, proficiency 熟练, facility 设备, technique 技术, ability 能力, understanding 理解反义词inefficiency, 无效率临近词efficient, efficacy, efficiency in, efficiency dip, efficiency gap, efficiency bar, efficiency rate, efficiency rank, efficiency less, efficiency rule, efficiency unit, efficiency test相似词effervescent, effete, efficacious, efficacy, efficiency apartment, efficiency room, efficient, effigy, 返回 efficiency