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塔标 : 35 phrases in 11 subjects |
| Air defense | 1 |
| Architecture | 1 |
| Aviation | 2 |
| Earth sciences | 1 |
| General | 2 |
| Name of organization | 1 |
| Oil / petroleum | 2 |
| Skydiving | 1 |
| Space | 2 |
| Technology | 21 |
| United States | 1 |
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