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蓝单 : 13 phrases in 12 subjects |
| Air defense | 1 |
| Animal husbandry | 1 |
| Business | 1 |
| Electronics | 1 |
| International trade | 1 |
| Latin | 1 |
| Metallurgy | 1 |
| Pharmacology | 1 |
| Securities | 2 |
| Space | 1 |
| Technology | 1 |
| Textile industry | 1 |
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