单词：optically violently variable quasar
单词：optically violently variable quasar 相关文章
Lesson 67 Volcanoes 火山 First listen and then answer the question. 听录音，然后回答以下问题。 Why does Tazieff risk his life like this? Haroun Tazieff, the Polish scientist, has spent
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[00:05.62]34) Ancient Quasar [00:11.96]Astronomers have discovered what they say is one of the earliest known structures ever to form in the universe. [00:20.82]It is a star-like object called a quasar. [00:24.76]Quasars are very large. [00:27.69]The
美国英语听力80篇
第一章 练习13：重读方式 Exercise 1-13 Variable Stress Exercise 1-13: Variable Stress Notice how the meaning of the following sentence changes each time we change the stress pattern. You should be starting to feel in control of your sentence
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violent a.粗暴的 Beethoven's father was a violent and dangerous man. 贝多芬的父亲是一个粗暴而又危险的人。 violently adv.激烈地；粗暴地 All the villagers in this town violently objected to the proposed construction of a nuc
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Which came first, black holes or galaxies? Its been a bit of a conundrum for astrophysicists. Black holes are known to devour matter, but did they arise before or after, the galaxies in which they exist? Now, scientists say it looks like the black ho
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Black Hole Quasar Building Galaxy A study in the journal Astronomy Astrophysics finds that a distant quasar, powered by a black hole, is building a galaxy that will eventually surround the black hole. Cynthia Graber reports Which came first, black ho
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