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力的确定 : 15 phrases in 9 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Bridge construction | 5 |
| Commerce | 2 |
| Consulting | 1 |
| Electronics | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Technology | 2 |
| United Nations | 1 |
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