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| mid-layer | |||
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中间层的 : 12 phrases in 8 subjects |
| Animal husbandry | 1 |
| Architecture | 1 |
| Aviation | 2 |
| Earth sciences | 1 |
| Electronics | 1 |
| General | 3 |
| Metallurgy | 2 |
| Securities | 1 |
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