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点大小 : 30 phrases in 12 subjects |
| Advertising | 1 |
| Agriculture | 4 |
| Air defense | 1 |
| Automobiles | 3 |
| Electronics | 1 |
| General | 3 |
| Geophysics | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Outdoor activities and extreme sports | 3 |
| Project management | 1 |
| Technology | 10 |
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