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准时地 : 27 phrases in 12 subjects |
| Aviation | 1 |
| Earth sciences | 1 |
| Economy | 1 |
| Electronics | 2 |
| General | 6 |
| Geophysics | 1 |
| International trade | 2 |
| Logistics | 1 |
| Oil / petroleum | 3 |
| Securities | 1 |
| Space | 1 |
| Technology | 7 |
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