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变距的 : 18 phrases in 8 subjects |
| Automobiles | 2 |
| Aviation | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 4 |
| Geophysics | 4 |
| Multimedia | 1 |
| Securities | 1 |
| Technology | 4 |
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