I want to start with an article, which-- mention an article by Backus, Kydland, and Kehoe-- actually Backus, Kehoe, and Kydland, three economists.

我将从一篇论文讲起-,这一篇论文由巴克斯,基德兰德和凯赫合著的论文-,实际上是巴克斯，凯赫和基德兰德，三位经济学家。

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