英语听力：2013-10-02 地平线：黑洞吞噬—6

 The mystery of what could count for the quasars' extraordinary brightness was the hot topic in astronomy during the 1960s. As astronomers² began to grapple with the new enigmatic objects that had been found by the radio telescopes, one astronomer¹, keen to have a crack at the problem, was a young researcher, called Donald Lynden-Bell. 

 

The sky looked totally different in the radio than it looked in the optical. And that was a big problem and the question was what were these things? 

 

While his colleagues were staring down telescopes, Lynden-Bell approached the problem through theory. He wanted to find out how something as small as a quasar could possibly be so bright. 

 

This had an enormous quantity of energy coming out of it and it came from a very small size. Now putting these numbers together, one could already see the mass of the energy required to give the emission³ was like ten million times the mass of the sun. 

 

But the problem was that quasars are tiny in size, were nothing like the scale of ten million suns. Lynden-Bell realizes there was only one thing that could possibly be so small yet have so much mass--those mathematical anomalies conjured⁴ up by theorists that had been predicted but never observed—super-massive black holes.

1 astronomer   

n.天文学家

参考例句：

• A new star attracted the notice of the astronomer.新发现的一颗星引起了那位天文学家的注意。
• He is reputed to have been a good astronomer.他以一个优秀的天文学者闻名于世。

2 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》

3 emission   

n.发出物，散发物；发出，散发

参考例句：

• Rigorous measures will be taken to reduce the total pollutant emission.采取严格有力措施，降低污染物排放总量。
• Finally,the way to effectively control particulate emission is pointed out.最后，指出有效降低颗粒排放的方向。

4 conjured   

用魔术变出( conjure的过去式和过去分词 )； 祈求，恳求； 变戏法； （变魔术般地） 使…出现

参考例句：

• He conjured them with his dying breath to look after his children. 他临终时恳求他们照顾他的孩子。
• His very funny joke soon conjured my anger away. 他讲了个十分有趣的笑话，使得我的怒气顿消。