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自输入 : 31 phrases in 14 subjects |
| Automobiles | 2 |
| Aviation | 3 |
| Business | 4 |
| Computers | 1 |
| Earth sciences | 3 |
| Electronics | 2 |
| General | 2 |
| Geophysics | 1 |
| Information technology | 1 |
| International trade | 1 |
| Shipbuilding | 1 |
| Space | 5 |
| Technology | 4 |
| Telecommunications | 1 |
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