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de faible valeur |
с низким содержанием : 24 phrases in 13 subjects |
Astronomy | 2 |
Chemistry | 1 |
Food industry | 2 |
Food service and catering | 2 |
Forestry | 2 |
Geology | 1 |
Mechanic engineering | 1 |
Medical | 1 |
Metallurgy | 5 |
Mining | 4 |
Oil and gas technology | 1 |
Technology | 1 |
Welding | 1 |