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| operating region | |||
| operational area; operation area; region of operation | |||
| 运行区: 34 phrases in 13 subjects |
| Automobiles | 3 |
| Aviation | 1 |
| Earth sciences | 1 |
| Electronics | 5 |
| Nautical | 5 |
| Project management | 1 |
| Rail transport | 2 |
| Refrigeration | 1 |
| Space | 1 |
| Technology | 10 |
| Transport | 1 |
| United Nations | 2 |
| Wind Energy | 1 |
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