efficacyKK [ˋɛfɪˏkæsi] /ˈɛfɪˌkæsi/发音名词1功效、效力、成效正式Researchers questioned the efficacy of the new teaching method.研究人员质疑这套新教学法的成效。2疗效医学The vaccine showed high efficacy against severe illness.这款疫苗对重症展现出很高的疗效。用这个字练口说→