• News of the widening trade gap, along with several other gloomy economic reports, contributed to a 2.5 - percent drop in the Dow Jones Industrial Average on Wednesday.

    VOA: standard.2010.08.11

  • How far along do I have to go drop off a - c when I have slope -2b?

    斜率-2b的线还要经过哪个横坐标呢

    耶鲁公开课 - 博弈论课程节选

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