Leaders are also discussing when and how they will cut back efforts to stimulate their economies, and expanding the role of emerging nations in economic decisions affecting the world.

VOA: standard.2009.09.25

If when x is low, y also tends to be low, then this will be negative number and so will this, so their product is positive.

如果x取值小,同时y值也小,这将是一个负值,这个也是负值,负负得正,结果是正值

耶鲁公开课 - 金融市场课程节选

Many of the reunion participants also realize that when the buses leave Mount Kumgang, it will be the beginning of another period of separation, likely to last the rest of their lives.

VOA: standard.2009.09.26