a person who concentrates primarily on a particular subject or activity; a person highly skilled in a specific and restricted field
专家。
a person highly trained in a particular branch of medicine
医学专家;专科医生。
possessing or involving detailed knowledge or study of a restricted topic
专业的
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the project may involve people with specialist knowledge .这个项目可能要有专业知识的人参与。
[attrib.]concentrating on a restricted field, market, or area of activity
专门的
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a specialist electrical shop. 一家电器专卖店。
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specialistn.专家;专科医生;医学专家
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socialistn.社会主义者;社会党党员