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几维 : 20 phrases in 10 subjects |
| Aviation | 3 |
| Business | 1 |
| Ceramics | 1 |
| Desert science | 1 |
| Earth sciences | 1 |
| General | 2 |
| Life sciences | 1 |
| Oil / petroleum | 2 |
| Technology | 6 |
| Textile industry | 2 |
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