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活 盖 : 49 phrases in 12 subjects |
| Architecture | 1 |
| Automobiles | 11 |
| Chemistry | 1 |
| General | 3 |
| Mechanic engineering | 1 |
| Metallurgy | 3 |
| Oil / petroleum | 2 |
| Plastics | 1 |
| Rail transport | 2 |
| Shipbuilding | 3 |
| Steel production | 1 |
| Technology | 20 |
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