pro·fi·cien·cy /prəʊˈfɪʃənsɪ/ n. 1. 熟练，精通 language proficiency 语言熟练程度 sb.'s proficiency on skates or skis 某人在溜冰或滑雪方面的熟练 a proficiency test 水平测试 a certificate of proficiency 水平(或程度)证书 He had been educated in England, which accounted for his proficiency in the English language. 他曾在英国受教育，这是他精通英语的原因。 2. 进步 He made little proficiency in literary accomplishments. 他在文学成就方面进步甚少。