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(单词翻译:双击或拖选)
Here’s a great story of someone using their noggin to figure out something about nature. For a long time people have been fascinated1 by comets passing by the earth. But nobody knew how far away they were. Aristotle, for example, figured that comets were in the upper atmosphere, just a few miles high. Other ancient thinkers thought this was probably wrong. But how could they tell? Can you think of a way? Imagine that you don’t have any modern instruments to use. No hubble telescope, no airplanes, no radar3. What might you do? A Danish astronomer4 named Tycho Brahe figured this one out. In fifteen seventy-seven everyone was talking about a comet2 that was then in the sky. Since a lot of people had seen it, Brahe travelled around gathering5 reports.
1 fascinated | |
a.被强烈地吸引住,感到着迷的 | |
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2 comet | |
n.慧星 | |
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3 radar | |
n.雷达,无线电探测器 | |
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4 astronomer | |
n.天文学家 | |
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5 gathering | |
n.集会,聚会,聚集 | |
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