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chemical combination |
化学 组合 : 14 phrases in 12 subjects |
Animal husbandry | 1 |
Biotechnology | 1 |
China | 1 |
Desert science | 2 |
Earth sciences | 2 |
General | 1 |
International Monetary Fund | 1 |
Oil / petroleum | 1 |
Space | 1 |
Technology | 1 |
Telecommunications | 1 |
Water resources | 1 |