虚构的火车以接近光速的速度行驶，它如何变成一个时间机器呢？

We're going to use this imaginary train to get as close as possible to the speed of light and see how it becomes a time machine.

youdao

虚构的火车以接近光速的速度行驶，它如何变成一个时间机器呢？

We're going to use this imaginary train to get as close as possible to the speed of light and see how it becomes a time machine.

youdao