| 单词 | professional astronomer |
| 释义 | professional astronomer In one layer a professional astronomer has included details of dozens of solar systems that are known to have planets. Times, Sunday Times A team of professional astronomers swiftly took up the case and watched the explosion as it cooled. Times, Sunday Times The discovery was attributed to 31 professional astronomers and two amateurs. Retrieved from Wikipedia CC BY-SA 3.0 The publication enjoyed immediate success, becoming the standard reference for professional astronomers for nearly a century. Retrieved from Wikipedia CC BY-SA 3.0 The programme was pitched to casual viewers up to professional astronomers, in a format which remained consistent from its inception. Retrieved from Wikipedia CC BY-SA 3.0 |
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