吗哪

Richard Layard, an economist at the London School of Economics, provides one prominent example of the transformation that some dismal scientists have undergone.

伦敦经济学院的一位经济学家理查德？莱亚德给出了一个著名的关于一些沉闷科学家经历的转变的例子。他因为1991年与史蒂芬？

A character witness:a person who gives evidence in a court of law about another person's reputation,conduct and moral qualities.

品行证人：一个在法庭上为他们的名誉、行为和品行提供证据的人。