In July 1989, Mr.Gorbachev formally renounced the so-called Brezhnev Doctrine, a policy which had justified the Soviet imposition of communist party rule in the East European satellite states.

VOA: standard.2009.11.03

So in particular, we need to figure out what formally makes something into a game.

具体来说,我们需要搞清楚怎么样才能形成博弈

耶鲁公开课 - 博弈论课程节选

Everyone agree because 5 is bigger than 1, and 5 is bigger than 4, so Up is and to use a technical term we'll define formally next time Up is the best response to Left.

大家都知道5大于1,5也大于4,所以选上是,以后我们就要用术语来说了,选上是左的最佳对策

耶鲁公开课 - 博弈论课程节选

So what I want to do is, I want to lay this out a little bit more formally as a game, since we haven't done anything like this for a week or so, we're going to play the game.

我想做的是,把这个安排得更正式一点 就像博弈一样,因为我们已经大约一个星期没有这样做了,我们将做这个博弈

耶鲁公开课 - 博弈论课程节选