[] to be involved in one particular area of business专营；专门从事◆a firm that specializes in charter flights专营包机服务的公司to become an expert in one particular area of business专门研究（或从事）；专攻◆She decided to specialize in media sales.她决定专攻媒体销售。▸specialization, specialisation /ˌspeʃəlaɪˈzeɪʃn; NAmE-ləˈz-/
noun
[, ]◆industrial specialization工业专门化◆What is your specialization?你的专业是什么？