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可 逆 的 : 55 phrases in 15 subjects |
Agriculture | 6 |
Animal husbandry | 1 |
Architecture | 2 |
Automobiles | 4 |
Cartography | 1 |
Chemistry | 1 |
Compressors | 1 |
Desert science | 1 |
Electronics | 4 |
General | 12 |
Genetics | 2 |
International trade | 1 |
Metallurgy | 6 |
Sports | 1 |
Technology | 12 |