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座孔 : 61 phrases in 12 subjects |
| Architecture | 2 |
| Automobiles | 16 |
| Aviation | 2 |
| Electronics | 3 |
| General | 3 |
| Metallurgy | 4 |
| Mining | 1 |
| Oil / petroleum | 4 |
| Rail transport | 3 |
| Refrigeration | 1 |
| Shipbuilding | 2 |
| Technology | 20 |
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