英语听力：2013-11-13 地平线：黑洞吞噬—24

 The X-ray image revealed how the black hole at the heart of the galaxy¹ was firing unimaginable amounts of radiation into surrounding space and with extraordinary consequences. 

 

We could see what was going on at the centre and we could start to understand how the black hole was feeding energy out into all the surrounding gas. 

 

What the image had captured was the mechanism² by which a feeding black hole can dominate everything around it. 

 

What it is doing is blowing bubbles at the centre of the cluster. And those bubbles are then expanding and growing like a pair of bubbles that might be formed in a fish tank aerator³. 

 

The dark areas in the image represent bubbles of super-heated gas, showing how the black hole blasts away matter from the centre, with each bubble almost the size of our own Milky⁴ Way, It is doing so across extraordinary distances. 

 

So this is showing the scale, we've seen the black hole at the centre having a galaxy wide effect on the surroundings. It's obvious in this image. I don't need to tell you anymore, because you could see it. 

 

What the image points to is an explanation for the strange correlation⁵ between the mass of a black hole and the mass of its surrounding galaxy.

1 galaxy   

n.星系；银河系；一群(杰出或著名的人物)

参考例句：

• The earth is one of the planets in the Galaxy.地球是银河系中的星球之一。
• The company has a galaxy of talent.该公司拥有一批优秀的人才。

2 mechanism   

n.机械装置；机构，结构

参考例句：

• The bones and muscles are parts of the mechanism of the body.骨骼和肌肉是人体的组成部件。
• The mechanism of the machine is very complicated.这台机器的结构是非常复杂的。

3 aerator   

n.通风装置

参考例句：

• An expert system with multiple objectives programming for aerator selection was established. 介绍一个曝气装置选用多目标专家系统。 来自互联网
• Jet aerator especially self-suction jet aerator can meet the need well. 射流曝气，尤其是自吸式射流曝气就可较好地满足这一要求。 来自互联网

4 milky   

adj.牛奶的，多奶的；乳白色的

参考例句：

• Alexander always has milky coffee at lunchtime.亚历山大总是在午餐时喝掺奶的咖啡。
• I like a hot milky drink at bedtime.我喜欢睡前喝杯热奶饮料。

5 correlation   

n.相互关系，相关，关连

参考例句：

• The second group of measurements had a high correlation with the first.第二组测量数据与第一组高度相关。
• A high correlation exists in America between education and economic position.教育和经济地位在美国有极密切的关系。