The agreement will take effect once twenty-five countries have ratified it into law after signing it.

VOA: special.2009.12.08

The Pygmalion effect that we are going to talk about next week or the week after, shows how teachers' expectations are self-fulfilling prophecies.

我们下周或再下周会探讨,皮格马利翁效应，说明为什么教师的期望就是自我实现的预言。

哈佛公开课 - 幸福课课程节选

The Pygmalion effect that we are going to talk about next week or the week after, shows how teachers' expectations are self-fulfilling prophecies.

我们下周或再下周会探讨,皮格马利翁效应，说明为什么教师的期望就是自我实现的预言。

哈佛公开课 - 幸福课课程节选