宇宙之钥

Modern experiments have repeatedly confirmed this discovery.

现代实验已一再证实这项发现

The speed of light remains fixed regardless of the direction in which it is traveling.

无论光线往任何方向行进 光速永远维持不变

Michelson and Morley were deeply embarrassed.

迈克尔孙和莫雷极尴尬地

about having to report they being wrong. The ether simply wasn't there.

承认错误 以太根本就不存在

But the experiment wasn't a total disaster.

但这项实验非但不算一无可取

It's one of the most important mistakes in the history of science.

反而成为科学史上极重要的重大错误

Light is a wave that travels through nothing. What a strange idea.

光的行进完全不需介质 这个概念真是怪异

And the discovery that the speed can not be varied,is also very odd.

而光速恒定不变的这项发现 也非常奇特

Likely,we physicists like strange things.

幸好物理学家都喜欢怪异的事物

because it often leads to breakthroughs.

因为这种事常有助于获得突破

And this discovery led to the biggest breakthrough of all:

这项发现有助于取得最重大的突破

The discovery that the speed of light is fixed.

光速恒定不变的这项发现

Would challenge everything we scientists believed about the universe.

会改变科学家对宇宙的所有认知

It would take another of my heroes,Albert Einstein.

这得请我的另一位英雄爱因斯坦

to discover the deep truth about the nature of light.

才能发现光本质的深奥真相

To explain how he did it,let me take you back to my childhood.

为了解释他是如何办到的 我带大家回到我的童年

重点讲解

1、confirm

证实，证明(情况属实)

X-rays have confirmed that he has not broken any bones.

X光片证实他没有骨折。

These new statistics confirm our worst fears about the depth of the recession.

这些新的统计数据证实经济衰退已经严重到我们最为担忧的境地。

（某人）证实，肯定，确认

The spokesman confirmed that the area was now in rebel hands.

这位发言人证实该地区现已落入叛乱分子手中。

He confirmed what had long been feared.

他证实了人们长期以来的担心。

使坚定，使确信(自己的决定、信仰或观点)

It has confirmed me in my decision not to become a nun.

这使我更加坚定了不做修女的决心。

2、challenge

挑战;难题

I like a big challenge and they don't come much bigger than this.

我喜欢大的挑战，而所有挑战中再没有比这更大的了。

The new government's first challenge is the economy.

新政府面临的第一个难题是经济问题。

(成功地)应对挑战，迎接挑战

The new Germany must rise to the challenge of its enhanced responsibilities.

一个崭新的德国必须迎接挑战，承担更多的责任。

They rose to the challenge of entertaining 80 schoolchildren for an afternoon.

他们一个下午成功接待了80名学童。

怀疑，质疑(真实性、价值、权威等)

Democratic leaders have challenged the president to sign the bill.

民主党领袖对总统签署这项法案提出了质疑。

The move was immediately challenged by two of the republics.

此项动议立即遭到其中两个共和国的反对。