With President Obama reported to have told wavering Democratic lawmakers that vote could well determine the success of his presidency, he traveled a few kilometers from the White House to suburban Virginia to make a high visibility public appeal.

VOA: standard.2010.03.19

There's sort of a period around the age of four, four and a half, where kids make the transition from failure to success.

儿童在大约四岁四岁半时,会发生从失败向成功的转变

耶鲁公开课 - 心理学导论课程节选