So, talk us through how do you get from Einstein's equation to a black hole?

那么，告诉我们，你是如何从爱因斯坦方程得到黑洞的？

And in fact, now we have scores of solutions of Einstein's equations which allow for time travel.

事实上，现在我们有很多爱因斯坦等式的解，它们允许时间旅行。

And what we found then was this continuation was completely described by the Einstein's equations for the shapes which evolved happily through the Big Bang and out of the other side.

然后我们发现，这种延续完全可以用爱因斯坦方程来描述，关于形状的方程在大爆炸中愉快地演化，并从另一边演化出来。

They could, in fact, be described by a particular solution of Einstein's equations that had been known since 1917, found by Karl Schwarzschild shortly after the discovery of general relativity.

事实上，它们可以用爱因斯坦方程的一个特解来描述，该方程自 1917 年以来就为人所知，由卡尔·史瓦西 (Karl Schwarzschild) 在广义相对论发现后不久发现。