sb's province formal a subject or activity of special interest, knowledge, or responsibility(某人的兴趣或知识的)范围,领域;职责范围
Renaissance art is not really his province - he specializes in the modern period.文艺复兴时期的艺术并不是他的研究领域——他的专业是现代艺术。
Marketing is within the province of the sales department.市场营销属于销售部的职责范围。