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| 石油区: 27 phrases in 10 subjects |
| Business | 1 |
| Construction | 1 |
| Earth sciences | 2 |
| Economy | 9 |
| General | 1 |
| International trade | 2 |
| Navigation | 1 |
| Oil / petroleum | 7 |
| Technology | 2 |
| United Nations | 1 |
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