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二 乙烯 : 154 phrases in 12 subjects |
| Chemistry | 13 |
| Ecology | 1 |
| Electronics | 6 |
| Energy industry | 1 |
| General | 47 |
| Geochemistry | 5 |
| Geology | 1 |
| Medical | 13 |
| Oil processing plants | 10 |
| Polymers | 5 |
| Technology | 48 |
| United Nations | 4 |
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