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恒定的 : 33 phrases in 15 subjects |
Animal husbandry | 2 |
Aviation | 2 |
Cryptography | 2 |
Desert science | 1 |
Electronics | 1 |
General | 13 |
Genetics | 1 |
Hydroelectric power stations | 2 |
Information technology | 1 |
Mining | 1 |
Refrigeration | 2 |
Steel production | 1 |
Technology | 2 |
Textile industry | 1 |
Wind Energy | 1 |