And today we'll finish that discussion, and, of course, point out actually the failure of classical mechanics to appropriately describe what's going on in an atom.

结束这部分的讨论，当然的，要指出经典力学,在描述原子内部,情况时是失败的。

麻省理工公开课 - 化学原理课程节选

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