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| time and space | |||
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时间 和 空间 : 10 phrases in 8 subjects |
| Artificial intelligence | 1 |
| Earth sciences | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 2 |
| Project management | 1 |
| Space | 2 |
| Technology | 1 |
| United Nations | 1 |
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