the practice of keeping one jump ahead of a friend or competitor
one-upmanship详细解释
one-up.man.ship n.Informal （名词）【非正式用语】 The art of outdoing or showing up a rival or competitor, as in exploits, privileges, or honors.胜人一筹（的本事）：在战胜对手方面的一种技巧,例如在利益、权力和名誉方面的竞争
