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座环 : 68 phrases in 17 subjects |
| Automobiles | 8 |
| Aviation | 1 |
| Chemistry | 1 |
| Compressors | 2 |
| Construction | 1 |
| Dermatology | 1 |
| Electric machinery | 1 |
| Electronics | 4 |
| Engineering geology | 1 |
| Hydroelectric power stations | 9 |
| Nautical | 1 |
| Oil / petroleum | 3 |
| Rail transport | 3 |
| Shipbuilding | 1 |
| Space | 1 |
| Technology | 26 |
| Textile industry | 4 |
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