/ˈspeʃəlɪst ||; ˈspɛʃəlɪst/noun [C] a person with special or deep knowledge of a particular subject 专家: She's a specialist in diseases of cattle. 她是牛疾病的专家。I have to see a heart specialist. 我要去看心脏专科医生。to give specialist advice 给予专业意见