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| 下塔: 24 phrases in 9 subjects |
| Aviation | 1 |
| Company name | 1 |
| General | 1 |
| Geology | 1 |
| Metallurgy | 1 |
| Nautical | 2 |
| Navigation | 1 |
| Oil and gas | 1 |
| Technology | 15 |
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