英语听力：自然百科 穿越银河系的旅行 Through Milky Way—16

 The glowing region is the accretion¹ disc, star debris² falling inward, would turn round in the maelstrom³ heated by frictions⁴ to such high temperatures that it glows white hot. 

 

 

 

So at the center of our galaxy⁵, we do have a black hole. We now know that today, but it’s not producing a tremendous amount of energy. So it’s perhaps, we could say it’s a black hole, it’s on a diet. It simply does not have a lot of material to feast on. 

 

 

 

But what would happen if SO2 and the other stars were pulled inward by the black hole? 

 

 

 

What happens when that material falls onto the black hole is that the black hole, there is radiation associated with the black hole and it can generate these jets scouting⁶ out from the center of the galaxy. 

 

 

 

Spewing out subatomic particles close to the speed of light, the beams are like vast cosmic searchlights. 

 

 

 

This is Messier 87, a large elliptical galaxy which has a supermassive black hole at its heart that’s feasting on its own stars. Shooting out from its bright core are jets which travel over 5,000 light years. 

 

 

 

I like to call and use the preemie dung of the galaxy world. These are the 10% of the galaxy that are show-offs.

 

 

 

Astronomers⁷ believe that the massive black hole at the heart of our galaxy has always been there right from the beginning. But just how old is the Milky⁸ Way galaxy. To find out, we need to leave the disc altogether in search of our star city’s oldest neighborhoods.

1 accretion   

n.自然的增长，增加物

参考例句：

• Every culture is an accretion.每一种文化都是长期积淀的结果。
• An accretion of sediment at the mouth of the river caused serious flooding.河口堆积物的增加导致河水严重泛滥。

2 debris   

n.瓦砾堆，废墟，碎片

参考例句：

• After the bombing there was a lot of debris everywhere.轰炸之后到处瓦砾成堆。
• Bacteria sticks to food debris in the teeth,causing decay.细菌附着在牙缝中的食物残渣上，导致蛀牙。

3 maelstrom   

n.大乱动；大漩涡

参考例句：

• Inside,she was a maelstrom of churning emotions.她心中的情感似波涛汹涌，起伏不定。
• The anxious person has the spirit like a maelstrom.焦虑的人的精神世界就像一个大漩涡。

4 frictions   

n.摩擦( friction的名词复数 )；摩擦力；冲突；不和

参考例句：

• Family frictions can interfere with a child's schoolwork. 家庭中的争吵会影响孩子的学业。 来自《简明英汉词典》
• As far as we are concerned, these frictions are not of our own making [have been imposed on us]. 就我们来说，这种摩擦是被动式的。 来自《现代汉英综合大词典》

5 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。

6 scouting   

守候活动，童子军的活动

参考例句：

• I have people scouting the hills already. 我已经让人搜过那些山了。
• Perhaps also from the Gospel it passed into the tradition of scouting. 也许又从《福音书》传入守望的传统。 来自演讲部分

7 astronomers   

n.天文学者，天文学家( astronomer的名词复数 )

参考例句：

• Astronomers can accurately foretell the date,time,and length of future eclipses. 天文学家能精确地预告未来日食月食的日期、时刻和时长。 来自《简明英汉词典》
• Astronomers used to ask why only Saturn has rings. 天文学家们过去一直感到奇怪，为什么只有土星有光环。 来自《简明英汉词典》

8 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。