efficiency
词形变化：
同义词：
competence | efficacy | effectiveness | productivity | proficiency | facility | technique | ability | understanding |
反义词：
词义辨析：
同义参见:
facility
understanding
technique
ability
efficiency
词形变化：
同义词：
competence | efficacy | effectiveness | productivity | proficiency | facility | technique | ability | understanding |
反义词：
词义辨析：
同义参见:
facility
understanding
technique
ability