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积空间 : 40 phrases in 13 subjects |
| Architecture | 1 |
| Artificial intelligence | 2 |
| Automobiles | 1 |
| Aviation | 1 |
| Electronics | 4 |
| Information technology | 3 |
| International trade | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 3 |
| Radio | 1 |
| Shipbuilding | 2 |
| Space | 5 |
| Technology | 15 |
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