Actually I had thought I was going north when I went to colleges. We're only after I got to saw the Ohio and cross the Ohio River did people remind me that well, it was maybe north of the Ohio River, it was not the northeast.

其实我以为是在往北走,到斯沃斯莫尔去，只是,等到我看到俄亥俄，过了俄亥俄河,才有人提醒我,那儿可能是俄亥俄河北岸，而不是美国东北部。

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But, you know, in 2D, the options are not just left and right or north and south, but infinity of possible directions in which I could go those 5 km.

但在二维空间中,不仅可以向左向右或者向南向北,我在走那5公里的时候可以有无数个方向

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