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横环 : 34 phrases in 14 subjects |
| Advertising | 1 |
| Agriculture | 4 |
| Automobiles | 2 |
| Chemistry | 4 |
| Ecology | 1 |
| Electric machinery | 1 |
| Electronics | 2 |
| General | 1 |
| Hydroelectric power stations | 3 |
| Nautical | 2 |
| Oil / petroleum | 2 |
| Plastics | 1 |
| Technology | 9 |
| Textile industry | 1 |
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