对发生在过去的一个封闭的时间型曲线时空里的事，你不可能改变。这就类似于说，在没有封闭的时间型曲线的平常时空中，你能改变已经发生的事。

You can no more change events in your past in a space-time with closed timelike curves than you can change events that already happened in ordinary space-time, with no closed timelike curves.

youdao

他相信只要敢于尝试，没有什么事不可以改变的。

He believed that nothing is unchangeable as long as we try.

youdao