So the line I've just drawn is the best response for Player I as it depends on Player II's choice.

我画的这条线表明参与人I的最佳对策,取决于参与人II的策略

耶鲁公开课 - 博弈论课程节选

And there are different choices here 1, 2, 3, and 4 for Player I, and here's the 45o line.

参与人I有1一直到4的可选策略,这条是45°线

耶鲁公开课 - 博弈论课程节选

So if Player I chooses 4, Player II should choose, I'm sorry, Player II chooses 4, player I should choose 2, and this is a straight line in between.

如果参与人I选4,参与人II要,说错了,是参与人II选4而I选2,这两点之间是一条直线

耶鲁公开课 - 博弈论课程节选

O2 has sought to counter cost complaints by touting the phone as a feature-packed device with a top of the line MP3 player and Internet browser, not just a mere cell phone.

FORBES

There were several severe complications in this case, but the bottom line is the player was not registered to play in first-class cricket.

BBC: Player row sparks Twenty20 chaos

From keeping the waning iPod classic in the lineup to leaving the still-potent iPod touch untouched save for a blanching and price reduction, the venerable digital media player line seemed all but ignored at a time of year when Apple once primed the holiday pump for MP3 players.

ENGADGET: Switched On: Next for the nano