名词
中文翻译：天文学
同义词：
['astronomy', 'cosmology']
例句：
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1. The astronomers have discovered a new planet in the constellation of Orion.
天文学家们在猎户座发现了一个新行星。
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2. Cosmologists believe that the universe is expanding and will continue to do so for billions of years.
宇宙学家认为宇宙正在扩张，并将在未来数十亿年内继续扩张。
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3. In his book, he discusses the theories behind the Big Bang and the origins of the universe.
在他的书中，他讨论了大爆炸理论背后的原理以及宇宙的起源。