European incentive programs threatened to spin out of control when solar module prices dropped - decreasing producers' costs - while the rates utilities had to pay to buy that power stayed high.

VOA: standard.2010.03.23

How do we enhance the belief in ourselves if there's such high correlation and there's a very high correlation and predictive power to a sense of hope, to a sense of optimism, to beliefs.

如何加强我们的信念,如果真有这么紧密的关联,如果希望,乐观主义和信念真的，有着非常紧密的关联和预测力。

哈佛公开课 - 幸福课课程节选

While the top-level process is continuing, Washington is consumed with a debate about whether the president should send more troops as the commanders want or take the air power and high technology route.

VOA: standard.2009.10.06

strategic objective." The defense secretary has given several hints of his views on the way forward in Afghanistan, including a speech earlier Monday in which he cautioned against an over-reliance on air power and high technology, which some officials believe should be used more in Afghanistan, instead of the additional troops the U.S.and NATO commander there wants.

VOA: standard.2009.10.06