You can never turn the clock back.

你永远也无法让时光倒流。

Can sand flow upward in the hour glass?

时光会倒流吗？

Back then, who could have imagined that people would one day be watching this on laptops and mobile phones – as some of you are today.

若是时光倒流，又有谁能够想得到，有朝一日人们能在电脑和手机上收看我圣诞致辞呢？正如你们当中某些人此时正在做一样。

He argues that progress depends on openness, but that this tends to create resistance that sets back the clock.

为开放是进步先决条件，但这也往往会产生阻力，使时间倒流。

If you could go back in time and speak with your younger self at the beginning of your career, what advice would you give yourself and how would you approach your work differently?

如果时间倒流，你会对刚开始工作你自说些什么？你会给自什么建议? 你工作方式会有所不同吗？

Three out of four of the dropouts said if they could turn back the clock they would choose to stay, and eight out of ten said they now recognized that a high school diploma was important to succeed in life.

四分之三辍学者表示，如果时光可以倒流，们会选择留在校园，继续完成自学业。高达80%辍学者明确表示，如果一个人想在生活中取得成功，拥有一张高中毕业文凭还是非常重要。

" You can't roll back the clock and remove all exotics or fix habitats, " Dr. Rosenzweig said.

罗森·茨威格博士说：" 你不能让时间倒流，消除所有外来物种，或者修复栖息地。"

Is it even possible to turn back time?

时光倒流真有可能吗？

That being said, that contraction pumps the blood out the pulmonary valve, which just like the tricuspid valve has three cusps and also prevents blood from going backward.

也就是说，心脏收缩将血液泵出肺动脉瓣；与三尖瓣一样，肺动脉瓣也有三个尖瓣，也可防止血液倒流。

Mentally strong people don't want to rewind time.

内心强大人不希望时光倒流。

All right. And, uh, you don't consider sewage backing up in the house a priority?

好吧。你们觉得污水倒流进屋子不是一件最该解决事情？

There may be little case for turning back the clock to the 1980s, before privatisation.

或许没有什么理由让时光倒流到私有化之前上世纪80年代。

These marine protected areas aren't just about turning back the clock.

这些海洋保护区不仅仅是为了让时光倒流。

Oh, honey, do you know what I would give to go back?

亲爱 如果时光能倒流我真什么都愿意？

Republicans aren't trying to move America forward, they want to turn back the clock.

共和党人并不想推动美国前进，们想让时光倒流。

Do you wish you could go back in time? and make a different decision?

你会希望时光倒流？做一个不一样抉择？

You wish that you could turn back the clock and start over.

你希望时光倒流，重新开始。

Push backwards through time and these ancestral debts begin to add up.

时光越是倒流，你赖以降生人数量越是增加。

Of course, things couldn't go back again.

时间不能倒流 我们也无法回到过去。

What if you could turn back time and make it fresh again?

如果你能时光倒流，让它焕然一新呢？