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| 天文远望镜 | |||
| 天文望远镜 | |||
| 天体望远镜 | |||
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| 天文望远镜 | |||
| 天体望远镜 | |||
| astronomical telescope: 9 phrases in 4 subjects |
| Air defense | 1 |
| Aviation | 2 |
| Space | 4 |
| Technology | 2 |
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