The four-dimensional space-time of special relativity is augmented with a fifth dimension to take into account the gauge transformation of the electromagnetic potentials.

本文从电磁势的规范变换出发引入第五维空间和一个新场量。

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For now, people only know about the one-dimensional time, two-dimensional, three-dimensional space, and Einstein, the reference to "four-dimensional space-time" concept.

就目前而言，人们只了解一维时间、二维平面、三维空间以及爱因斯坦提及的“四维时空”概念。

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Space-time, according to Einstein's theories of relativity, is a four-dimensional fabric woven together by space and time.

WSJ: Einstein Proved Right on Gravity��Again

Now imagine this happening in the four-dimensional fabric of space and time.

NPR: Einstein: Relatively Speaking, a Complicated Life