Physically going back in time is not an option yet, but is there anything we can learn from the young ones?

身体上回到过去目前还不现实，但我们能从年轻人那里学到什么呢？

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Researcher Prof Kevin Campbell-of the University of Manitoba, Canada, said: 'The molecules are no different than going back in time and taking a blood sample from a real mammoth.'

加拿大马尼托巴大学（University of Manitoba）的研究者凯文·坎贝尔（Kevin Campbell）教授说：“（取自猛犸象冰冻标本的DNA所再造的血液）分子，与回到过去从一只活的猛犸象身上取得的血样并无二致。”

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"Actually,there were a lot of Chinese going back to the People's Republic of China at that time, ninety-thousand in one year from Fukien Province alone.

VOA: special.2011.06.10

What America do we see? I'm going to look back to a passage I talked about in a different vein last time, on 26 and 27, just for one quick example.

看到什么了呢？，我们看到了什么样的美国？，我想回到,上一次讲另一个脉络时讲到的段落，在26到27页。

耶鲁公开课 - 1945年后的美国小说课程节选

This means going back in time, weeding out the bad, and rewriting history in an honest, yet sunny way.

FORBES: You're So Terrific: Three Steps to Telling Us Why

The problem concerns those familiar time travel paradoxes, like going back in time and murdering your mother before you were born.

CNN: Time travel: Can it really be done?

That means sometimes going back in time, which he can do, he says, so long as he can figure out the math.

NPR: Using Science to Rescue Art