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harden: 116 phrases in 13 subjects |
Agriculture | 7 |
Chemistry | 4 |
Construction | 6 |
Earth sciences | 2 |
Electronics | 4 |
Fish farming pisciculture | 1 |
General | 1 |
Industry | 2 |
Information technology | 1 |
Life sciences | 1 |
Metallurgy | 85 |
Natural sciences | 1 |
Transport | 1 |