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| 回流式: 45 phrases in 13 subjects |
| Aviation | 2 |
| Chemistry | 1 |
| Electronics | 1 |
| General | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 3 |
| Oil / petroleum | 1 |
| Polymers | 1 |
| Rail transport | 2 |
| Space | 5 |
| Technology | 24 |
| Textile industry | 1 |
| Wind Energy | 2 |
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