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| compound crossing; multiple cross | |||
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复杂交 : 24 phrases in 8 subjects |
| Agriculture | 8 |
| Animal husbandry | 3 |
| Economy | 1 |
| General | 2 |
| Genetics | 6 |
| Securities | 1 |
| Selective breeding | 1 |
| Technology | 2 |
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