So traveling back in time is nothing more or less than the fourth-dimensional version of walking in a circle.

因此，穿越时间回到过去就跟在第四维空间里走了一个圈没什么区别。

youdao

In the lives of most mortals, time is nothing more than a simple hourglass, its sands quietly trickling away.

在多数人类的生命中，时间只不过是一个普通的沙漏，沙子静静地流走。

youdao

A day, a month, a year or a century, in the long river of time, is nothing but a drop of water, a foam, a twinkling.

一天，一个月，一年，一个世纪，在世间的长河中都只能是一滴水，一朵浪花，一个瞬间。

youdao

A day, a month, a year or a century, in the long river of time, is nothing but a drop of water, a foam, a twinkling.

一天，一个月，一年，一个世纪，在世间的长河中都只能是一滴水，一朵浪花，一个瞬间。

youdao