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| 抽提物: 30 phrases in 10 subjects |
| Agriculture | 1 |
| Animal husbandry | 3 |
| Chemistry | 1 |
| Ecology | 2 |
| Genetics | 1 |
| Geology | 12 |
| Oil / petroleum | 3 |
| Oil processing plants | 3 |
| Reproductive biology | 1 |
| Technology | 3 |
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