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测向场 : 13 phrases in 10 subjects |
| Advertising | 1 |
| Air defense | 1 |
| Aviation | 2 |
| Geology | 1 |
| Metallurgy | 1 |
| Rail transport | 2 |
| Space | 1 |
| Technology | 1 |
| Telecommunications | 2 |
| Textile industry | 1 |
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