Managing director is the traditional term for the top executive of a business in the United Kingdom and some other English speaking countries, but not in the United States.
MD是除了US外的英语国家对最高执行官的称呼
While The general manager in the sense contemplated in this article is the executive of a professional sports team responsible primarily for acquiring the rights to player personnel, negotiation of their contracts and reassignment or dismissal of players no longer desired on the team. Many other businesses have a person referred to as the business' general manager, but such positions are outside the scope of this article.
GM一般指球队的经纪人。但princeton的解释在其他行业指
the highest ranking manager
也就是排行最高的经理,我个人认为是同一职位的不同叫法。
参考资料:wikipedia, wordnet.princeton.edu/perl/webwn
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