[例]  management by objectives

　　2. group of people who control an organization管理层

　　[同义词]  executive, board, directors

　　managerial (adj.) of, relating to, or characteristic of a manager or management管理的

　　[例]  managerial roles

　　mark down (v) to reduce the price of goods to encourage sales 减价

　　[例]　In the promotion campaign , the hyper-market was marking down all the prices of the goods.

　　mass media (n) ways of spreading news and information to the greatest number of people , eg by television, radio or newspapers 大众传媒

　　[例]　She got full financial aid to study in UBC , majoring in Mass Media.

　　mass production (n.) the manufacture of goods in large quantities, often using standardized designs and assembly-line techniques  大批量生产

　　[例]  Mass production reduces unit cost substantially, reflecting the advantage of economy of scale.