然而，使用广义相对论，也有别的方法来描述他对时间的体验。

Using general relativity, however, there is another way to describe his experience of time.

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现在，Choptuik和普林斯顿大学的Frans Pretorius用计算机模拟碰撞，这些碰撞实验使用来自包括广义相对论里极度复杂的数学数据。

Now Choptuik and Frans Pretorius of Princeton University have simulated such collisions, including all the extremely complex mathematical details from general relativity.

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