宇宙之钥

But what's really amazing,is this distortions also explain.

但真正神奇的是这类变形也可解释

that mysterious force discovered by Newton so many years ago.

牛顿多年前所发现的神秘作用力

Gravity is the warping of spacetime.

重力就是时空扭曲的结果

Now,curving space and time may sound tricky wrap your head around.and galaxies.

时空扭曲 听来可能玄得让人摸不着头绪 但一点都不玄

Imagine a boat locked on the straight course across the flat surface of a lake.

想象一艘船锁定直线航道 正准备渡过平坦的湖面

A lake that stretches away... Forever.

一座永远无限延伸的湖

The flat lake is like undistorted spacetime.

平坦的湖面就如同未扭曲的时空

Now imagine a giant hole appears beneath the lake.

现在想象湖面下出现一个大洞

and water begins to drain away.

湖水开始排掉

The lake has become distorted,just as spacetime is by a planet.

湖面因此扭曲 就如时空因行星扭曲一样

The effect would be to drag the boat towards the hole...

此作用会将船向洞里拉

so that it begins to curve around it.

因此船开始绕着洞周围航行

Even though the boat is still being driven in a straight line.

即使船本身仍设定在直线航行

And it's exactly that same effect a massive star or planet has.on spacetime.

这种作用就相当于 巨大恒星或行星 对时空产生的作用

It causes spacetime to distort around it,pulling things towards it.

时空会在星体四周产生扭曲 把物体拉向星体

And that's why things fall to earth:Gravity.

因此物体才会坠落地球 就是因为重力

重点讲解

1、discover

发现(以前不知道的事实)

She discovered that they'd escaped.

她发现他们已经逃跑了。

I discovered I was pregnant.

我发现自己怀孕了。

(第一个)发现

the first European to discover America.

第一个发现美洲大陆的欧洲人

In the 19th century, gold was discovered in California.

19 世纪时，在加利福尼亚发现了金子。

初次接触(某活动并乐在其中)

I wish I'd discovered photography when I was younger.

我要是早点接触到摄影技术就好了。

Discover the delights and luxury of a private yacht.

体验私人游艇的乐趣和奢华。

2、appear

好像;似乎;看来

There appears to be increasing support for the leadership to take a more aggressive stance.

好像有越来越多的人支持领导层采取更为强势的立场。

The aircraft appears to have crashed near Katmandu.

飞机似乎在加德满都附近坠毁了。

看起来；显得

She did her best to appear more self-assured than she felt.

她竭力让自己表现得比实际更自信。

He is anxious to appear a gentleman.

他急于想表现得像个绅士。

出现；显现

A woman appeared at the far end of the street.

一个女人远远出现在街的尽头。

Last night some of the prisoners appeared on the roof.

昨晚，其中几个犯人出现在房顶上。