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。
We don 't know much about the appearance of the surface of Antarctica, since it is covered with ice more than two miles thick in some places.
我们对南极洲的地面形状了解不多，因为在这个洲有些地面覆盖着两英里多厚的冰层。
We don 't know much about the appearance of the surface of Antarctica, since it is covered with ice more than two miles thick in some places.
我们对南极洲的地面形状了解不多，因为在这个洲有些地面覆盖着两英里多厚的冰层。
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