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连 接上 : 29 phrases in 10 subjects |
| Automobiles | 3 |
| Electronics | 3 |
| General | 4 |
| Metallurgy | 1 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Project management | 1 |
| Steel production | 1 |
| Submarines | 1 |
| Technology | 13 |
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