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约束性 : 37 phrases in 14 subjects |
| Business | 2 |
| Construction | 1 |
| Economy | 2 |
| Education | 1 |
| Electronics | 6 |
| General | 14 |
| Law | 1 |
| Mathematics | 1 |
| Military | 1 |
| Nautical | 1 |
| Nuclear and fusion power | 1 |
| Patents | 1 |
| Technology | 2 |
| United Nations | 3 |
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