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大扰 动 : 20 phrases in 10 subjects |
| Aviation | 1 |
| China | 1 |
| Earth sciences | 4 |
| Electronics | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Life sciences | 1 |
| Space | 4 |
| Technology | 3 |
| United States | 2 |
| Wind Energy | 2 |
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