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横 轴 向 : 28 phrases in 13 subjects |
Agriculture | 2 |
Automobiles | 2 |
Bridge construction | 3 |
Computer games | 1 |
Electronics | 5 |
General | 1 |
Geophysics | 3 |
Hydroelectric power stations | 1 |
Metallurgy | 1 |
Nautical | 2 |
Rail transport | 1 |
Space | 1 |
Technology | 5 |