The center of gravity for economic thought in the United States has long been found along the two miles in Cambridge, Mass. , that run between Harvard University and M. I. T.

一直以来，美国经济学思想的中心都位于马萨诸塞州坎布里奇的一段两英里长的地带，它的两端分别是哈佛大学和麻省理工学院。

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Sixty percent of the carbon emissions generated by a simple cotton T-shirt comes from the 25 washes and machine dryings it will require, the Cambridge study found.

剑桥大学研究发现，一件简单的棉制T恤的60%的二氧化碳排放量，来自于它所经过的25次洗涤和机器烘干。

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Sixty percent of the carbon emissions generated by a simple cotton T-shirt comes from the 25 washes and machine dryings it will require, the Cambridge study found.

剑桥大学研究发现，一件简单的棉制T恤的60%的二氧化碳排放量，来自于它所经过的25次洗涤和机器烘干。

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