These time traveller police ensure that any other time travelers cannot possibly alter the timeline of what happened.

这些时间旅行警察确保任何其他时间旅行者都不可能改变已经发生的时间线。

In the last 20 years, powerful space telescopes have carried us ever deeper into space, and we have become virtual time travellers.

在近 20 年里，强大的空间望远镜带领我们在更深处的太空中遨游，我们成了真正意义上的时间旅行者。

Basically, a time traveller police force that is always present at all parts of history but invisible to those of us who aren't time travelers.

基本上，时间旅行警察部队总是出现在历史的各个部分，但我们这些不是时间旅行者的人看不到。

Looking at photos of Chanel in her youth, it's almost as if they were taken today, or like she was a time traveller sent back a hundred years.

看着香奈儿年轻时的照片，就好像它们是今天拍的，或者她是一个被送回一百年前的时间旅行者。